* Even though Luna has a hard time laning against Viper due to Nethertoxin being able to disable
Moon Glaives and
Lunar Blessing, Luna can take out Viper once she builds either
Black King Bar or
Silver Edge which will allow her to attack Viper freely.
* Eclipse can often finish off Viper from early-to-mid stages of the game before he can retaliate as
Corrosive Skin gives little magic resistance to him early on.
* Manta Style is an item that Luna commonly buys in most of the games, which lets her disjoint
Viper Strike. Additionally, illusions from Manta Style can make Viper waste time attacking them.
Additional:
* Even though Luna has a hard time laning against Viper due to Nethertoxin being able to disable
Moon Glaives and
Lunar Blessing, Luna can take out Viper once she builds either
Black King Bar or
Silver Edge which will allow her to attack Viper freely.
* Eclipse can often finish off Viper from early-to-mid stages of the game before he can retaliate as
Corrosive Skin gives little magic resistance to him early on.
* Manta Style is an item that Luna commonly buys in most of the games, which lets her disjoint
Viper Strike. Additionally, illusions from Manta Style can make Viper waste time attacking them.
* Guardian Angel does not offer protection from Eclipse, though it will negate damage from
Moon Glaives.
* Luna's high magical damage from Lucent Beam and
Eclipse can often finish allied heroes before Omniknight can save them with
Purification.
Additional:
* Guardian Angel does not offer protection from Eclipse, though it will negate damage from
Moon Glaives.
* Luna's high magical damage from Lucent Beam and
Eclipse can often finish allied heroes before Omniknight can save them with
Purification.
* If Rubick can use Spell Steal to take
Nethertoxin, he will be able to disable
Corrosive Skin, reducing much of Viper's durability.
* He can also steal Viper Strike, which can be used to hinder a hero on your team (or multiple heroes, if Rubick has
Aghanim's Scepter).
* All of Omniknight's abilities are valuable for Rubick to Spell Steal, and Omniknight has no throwaway ability to cover his last used spell.
* Clinkz does not have any passive abilities at all, making Nethertoxin nearly useless.
* Viper's Corrosive Skin provides no protection against Clinkz's physical damage output.
* Heroes who can harass Omniknight out of lane will keep him weak in the mid game: Viper,
Venomancer,
Clinkz.
* Shukuchi ignores slows and allows Weaver to escape Viper's onslaught.
* Time Lapse dispels
Poison Attack and
Corrosive Skin and undoes poison damage.
* Weaver's high burst damage allows him to kill Viper before being killed.
* Heroes that rely on slows or low-duration stuns have trouble catching Weaver: Omniknight,
Lich.
* Viper cannot interrupt heroes with powerful channeling abilities: Bane,
Enigma,
Shadow Shaman,
Warlock
* Heroes under Guardian Angel can be still damaged from the pure damage of
Black Hole and magical damage of
Midnight Pulse.
* Heroes that can drain mana negatively affect Viper's ability to use Poison Attack, Nethertoxin and Viper Strike: Lion,
Anti-Mage
* Heroes who can drain mana can make Omniknight useless after he uses one or two abilities: Lion,
Anti-Mage,
Nyx Assassin.
* Fortune's End's AoE dispel will remove Heavenly Grace and Guardian Angel.
Additional:
* Oracle can dispel Heavenly Grace (which he can also bait out with Fate's Edict).
* With Fortune's End, Oracle can dispel Guardian Angel in an area of effect.
* Although Viper Strike cannot be dispelled by Doppelganger, Viper's lack of mobility and AoE damage makes him an easy target for Phantom Lancer.
* Viper's various slows do not work against Phantom Rush.
* Although Phantom Lancer should be wary due to Nethertoxin applying Break.
Additional:
* Phantom Lancer can overwhelm Viper with spawned illusions from Spirit Lance and
Doppelganger.
* Viper's various slows do not work against Phantom Rush. Additionally, it is almost impossible to keep Lancer inside
Nethertoxin's radius in order to disable the passive.
* Viper is kind of a mixed package. Tinker is very good against him. but stands a better chance against him then most heroes.
* Viper has a high innate magic resistance, but relies on his primary attacks to really deal damage. making Laser an effective way to save allies from him, and deal damage. Keep in mind that his Corrosive Skin will prevent Tinker from blinking.
* Viper's Viper Strike and
Poison Attack will also have a hard time damaging allies through Tinker's constant casting of
Defense Matrix.
* Viper has no solutions to cancel Rearm nor any of Tinker's escape attempts with
Boots of Travel
* However, if Viper gets a jump on Tinker first. Tinker will unlikely survive versus Viper.
* Viper's lack of escape and durability means he can be ran over in a laning stage by Spawn Spiderlings.
* Broodmother can bring Viper down quickly with Insatiable Hunger activated.
* Arcane Orb's pure damage penetrates Guardian Angel's defense.
* Astral Imprisonment's mana steal is devastating to Omniknight's already low mana pool.
* Viper is an agility hero, and his item build mostly includes agility items, so Natural Order can be devastating, removing all armor and greatly decreasing the effectiveness of Corrosive Skin, weakening Viper's magic resistance. Additionally, Echo Stomp and Earth Splitter deal both magical and physical damage, and can help bringing Viper down fast.
* Aghanim's Scepter may be necessary to take Viper down due to
Nethertoxin's break.
* Dispel Magic from {U:Storm} instantly removes Heavenly Grace and Guardian Angel from Omniknight's allies in its radius of effect.
* Pugna's Decrepify allows him to save allies from being ganked by Viper, since Viper mostly relies on direct attacks in order to deal damage.
* Nether Ward can discourage Viper from spamming his abilities.
* Viper's damage over time is not enough to kill Pugna as he will have more than enough time to save himself (or his allies) with Life Drain and Viper has no solutions to cancel it.
* Pugna has no passive abilities, which renders Nethertoxin nearly useless.
* Rage ignores all of Viper's magical damage, although
Viper Strike can pierce spell immunity and slows him down.
* Feast and
Open Wounds from
Aghanim's Shard can be combined to heal through Viper's physical damage.
* Aghanim's Scepter upgraded
Infest can be used to disarm Viper, preventing him from using
Poison Attack on Lifestealer's allies.
* Viper Strike can be countered through Snowball, wasting Viper's mana through his ultimate.
* Nethertoxin is useless against Tusk as he has no passive abilities at all. And to make things worse,
Nethertoxin cannot disable
Walrus PUNCH! because it's an auto-cast ability.
* Ball Lightning allows Storm Spirit to escape through
Viper Strike, wasting Viper's mana.
* It's also very easy to wait out the duration of Nethertoxin's break.
* Almost all of Viper's damage revolves exclusively around single-target damage-over-time effects. Furthermore, without any hard disables, Terrorblade can almost always get a Sunder off.
* Viper has low mobility and Corrosive Skin doesn't protect against physical damage, which means that Terrorblade under Metamorphosis can quickly kill Viper.
Additional:
* Viper's damage over time and lack of disables makes him easy to Sunder.
* Viper's physical damage is mitigated by Terrorblade's high armor.
* Terrorblade under Metamorphosis can quickly kill Viper with heavy physical damage.
* Viper has no disable, which means he has no way of preventing Morphling from escaping from any of his abilities or keep him inside Nethertoxin.
* Viper is almost exclusively damage over time, which is weak against Morphling due to Attribute Shift (Strength Gain). Additionally, Morphling has no passive abilities, reducing
Nethertoxin's effectiveness against him even further.
* Morphling can turn into Viper himself, allowing him to use any of Viper's abilities against him (excluding Viper Strike). This is particularly bad due to the fact that Viper is already a very slow hero, making
Poison Attack and
Corrosive Skin's slows especially difficult to deal with.
* Mortimer Kisses can reduce Omniknight's impact in teamfights. Omniknight's
Heavenly Grace cannot purge multiple stacks of
Mortimer Kisses. The damage is also magical, making Omniknight's ultimate,
Guardian Angel, useless.
* Ice Wall and
Ghost Walk can be used to kite and escape from Viper.
* Chaos Meteor and
Sun Strike deal heavy damage and can quickly bring Viper down.
* Cold Snap,
Tornado, and
Deafening Blast are powerful disables that reduce Viper's effectiveness.
* E.M.P. burns Viper's limited mana pool, reducing his potential poison damage.
* Forge Spirits can melt Viper's armor and reduce his durability.
* Heroes with naturally low mana can be easily shut down by E.M.P.: Sven,
Tiny,
Wraith King,
Omniknight
Additional:
* Tornado dispels Heavenly Grace and Guardian Angel from multiple targets.
* Guardian Angel is generally useless against Invoker as he primarily relies on magical damage.
* E.M.P. depletes Omniknight's already small mana pool.
* Invoker's many disables keep Omniknight's team occupied until Guardian Angel times out.
* Corrosive Skin makes Viper receive less damage from Invoker's spells
* Viper can harass Invoker with his Poison Attack in the early game.
* Viper Strike and
Poison Attack can kill Invoker easily if Ghost Walk is on cooldown.
* Heroes who do not have nor rely on passive abilities make Nethertoxin much less effective: Clinkz,
Pugna,
Nature's Prophet,
Dark Seer,
Lycan,
Tusk
* Heroes that have a weak laning stage: Spectre,
Nyx Assassin,
Clockwerk,
Spirit Breaker,
Omniknight,
Pudge.
* Ranged heroes will have a hard time hitting enemies inside Magnetic Field: Silencer,
Viper.
* Heroes with large magical AoE damage will fare well against Omniknight: Lich,
Ancient Apparition,
Jakiro,
Disruptor.
* Heroes who do not have nor rely on passive abilities make Nethertoxin much less effective: Clinkz,
Pugna,
Nature's Prophet,
Dark Seer,
Lycan,
Tusk
* Heroes with large physical resistance do not counter Muerta's Pierce the Veil such as
Omniknight or
Tidehunter
* Viper cannot interrupt heroes with powerful channeling abilities: Bane,
Enigma,
Shadow Shaman,
Warlock
* Heroes with large magical AoE damage will fare well against Omniknight: Lich,
Ancient Apparition,
Jakiro,
Disruptor.
* Heroes who cannot escape from Trample early might be easy first blood. Heroes like Witch Doctor and
Omniknight should play very cautiously alone...
* In general, heroes with long cooldowns on their abilities or ultimate will struggle against the relentless pressure provided by Dark Rift or Fiend's Gate (Requires
Aghanim's Scepter):
Terrorblade,
Dragon Knight,
Omniknight.
* Heroes that can purge buffs can dispel Guardian Angel: Invoker,
Shadow Demon,
Oracle.
Additional:
* Demonic Purge can dispel Guardian Angel on the key target during combat, allow your allies to finish them.
* Illusion or summon-based heroes can be a problem to Viper due to his lack of AoE damage: Naga Siren,
Phantom Lancer,
Beastmaster
* Heroes with extremely slow movement speed will cripple against Solar Bind: Medusa,
Viper
* Viper's Nethertoxin cannot disable
Reincarnation, which could put him in disadvantage against Wraith King if his whole team is with him.
* In addition, Viper doesn't like buying Diffusal Blade, which is the only item that can help him against Wraith King.
* Wraith King's high burst damage allows him to kill Viper before being killed.
* Melee heroes with low mobility can be kited and killed by Viper: Treant Protector,
Kunkka,
Alchemist,
Troll Warlord,
Wraith King,
Tiny,
Sven.
* Enfeeble weakens Viper's attack damage, any healing he receives and his cast range, which makes him unable to harass enemy heroes with Nethertoxin, Poison Attack and Viper Strike.
* Viper's Corrosive Skin is useless against Bane as all of his damaging abilities deal Pure damage.
* Viper has no solutions to cancel Fiend's Grip and in addition, he hates buying disabling items like
Eul's Scepter of Divinity.
* Heroes with strong dispels can dispel Bane's disables from their allies: Oracle,
Legion Commander,
Omniknight.
* Global Silence takes Omniknight out of the fight completely.
* Glaives of Wisdom are a great harass vs Omniknight during the laning stages of the game, since it doesn't aggro creeps & ignores his high base armor. It deals pure damage, which means it can also go through Guardian Angel.
* Silencer's intelligence steal can also cause Omniknight to falter in the early phases as it reduces his ability to use his spells.
* Heroes with damage-increasing passive abilities, such as Viper and
Riki, will usually kill Silencer in a short time before he even has time to set up his abilities.
* Windrun evades
Poison Attack and counteracts the slow.
* Viper's low mobility makes him an easy Shackleshot target.
* Focus Fire grants Windranger significant physical damage output to quickly wear Viper down.
* Powershot is a strong harassment and zoning tool against Viper in lane.
* Since Windranger is bad against magical damage, heroes with continuous magical damage or magical nukes can blast her: Zeus,
Tinker,
Leshrac,
Viper,
Skywrath Mage,
Lion,
Lina,
Venomancer.
* Impetus is not blocked by Guardian Angel. A {U:Satyr Banisher} can also be controlled to dispel
Guardian Angel.
Additional:
* Enchantress's Impetus deals pure damage instead of physical damage and ignores
Guardian Angel, thus fully negating one of Omniknight's most important abilities for teamfights.
* Similar to Doom, Enchantress can use Enchant on Satyr Banisher, which will give her access to Satyr Banisher's
Purge, and allow her to remove Heavenly Grace and Guardian Angel.
* Heroes with break can disable Untouchable for a while: Doom and
Shadow Demon (via
Aghanim's Scepter),
Viper,
Shadow Shaman with Hex Breaks talent.
* Heroes that can drain mana negatively affect Viper's ability to use Poison Attack, Nethertoxin and Viper Strike: Lion,
Anti-Mage
* Heroes who can drain mana can make Omniknight useless after he uses one or two abilities: Lion,
Anti-Mage,
Nyx Assassin.
* Viper's skill set makes him an effective early game ganker against Anti-Mage before he is sufficiently farmed.
* Viper's Corrosive Skin and low mana pool causes him to take little damage from Mana Void.
* Nethertoxin disables Mana Break and Counterspell, weakening both his offense and defense.
* Nethertoxin breaks Sniper's passives.
* Corrosive Skin allows Viper to deal more damage to Sniper than Sniper deals to him when laning, especially by briefly stepping into Shrapnel.
* Viper Strike together with
Poison Attack can slow Sniper and tears through his low health and mobility.
* Being mostly a physical damage dealer, Sniper's effectiveness is greatly reduced by Omniknight's Guardian Angel.
* Omniknight's Degen Aura allows him to slow sniper and catch him. Sniper has to then use some escape item.
* Omniknight can also protect an ally from being finished off by Assassinate by using Purification, then using
Heavenly Grace which grants a massive strength boost.
* Nethertoxin breaks Multicast.
* Corrosive Skin minimizes the damage from Ignite and Fireblast.
* Heavenly Grace reduces Fireblast stun time and dispels Ignite.
* Purification can heal damaged heroes if needed.
* Poison Attack and
Viper Strike slows Axe significantly, and puts his
Blink Dagger on cooldown, preventing him from initiating.
* Nethertoxin can break Counter Helix.
Additional:
* Nethertoxin prevents
Counter Helix from triggering, which significantly lowers Axe's damage output in the early to mid game.
* Viper's various slows and damage over time prevents Axe from initiating as well as putting his Blink Dagger on cooldown.
* Omniknight's healing prevents allies from dropping low enough for Culling Blade
* Heavenly Grace dispels
Battle Hunger.
* Axe also tends to get close to allied heroes in order to damage them with his Counter Helix, which can easily be punished by Purification.
* Nethertoxin disable passives, negating Spectre's damage and survivability by removing both
Dispersion and
Desolate.
* Due to Haunt and
Radiance's burn, Spectre is heavily susceptible to being persistently slowed and damaged by
Corrosive Skin without even directly attacking Viper.
* Poison Attack and
Viper Strike further slow Spectre's movement speed to a crawl, while his improved magic resistance means he can easily shrug off
Radiance's burn.
Additional:
* Nethertoxin disables
Desolate and
Dispersion, leaving Spectre with far less damage output and damage mitigation in engagements.
* Spectre is one of the weakest heroes at early levels. Viper can stifle her farm with early fights before Spectre purchases any major items.
* Global Guardian Angel will protect his allies from Spectre's
Haunt, both when they are alone and in teamfights.
* Purification is a major problem for melee enemies, Spectre included, since they must be next to an enemy in order to attack. The AoE damage also allows Spectre to be singled out from her illusions.
* Degen Aura will prevent Spectre from chasing Omniknight, further exacerbated by her terrible mobility outside Haunt.
* Viper's Nethertoxin disables
Cloak and Dagger, negating Riki's invisibility and much of his damage. It also makes him more vulnerable to magic damage, which does not go well with Riki's low health pool. With the talent applied, he can't even blink to safety or hide with Tricks of the Trade.
* Corrosive Skin makes it hard for Riki to chase Viper and attack him due to the attack speed slow.
* Viper Strike stays on Riki even after he goes invisible.
* Poison Attack makes it risky for Riki to get last hits and can make the laning phase difficult for him.
* Riki takes a lot of damage from Purification while ganking Omniknight's allies or himself.
* Heavenly Grace instantly purges the slow from
Diffusal Blade, while also providing a large amount of survivability for his victim.
* Degen Aura can hinder Riki's positioning tactics and put a heavy toll on Riki's already poor movement speed.
* Omniknight can easily save his allies by using Guardian Angel in combat.
* Nethertoxin breaks the damage block from Bulwark.
* Poison Attack and
Viper Strike's slows make it difficult for Mars to contribute to fights due to his low mobility.
Additional:
* Nethertoxin disables
Bulwark entirely, making Mars far less tanky. Using
Nethertoxin inside
Arena of Blood may discourage enemies from following up with Mars' initiation.
* Rod of Atos is currently common on Viper and keeps Mars in position long enough to be killed.
* Beware that Viper is not very tanky earlier in the game, so positioning against Mars is important since a well-timed Spear of Mars can be the end of Viper.
* Heroes that can save their allies can be a big problem for Mars: Dazzle,
Omniknight.
* In the early game, a Dragon Knight without Black King Bar is basically defenseless against Viper.
* Viper can harass Dragon Knight at any time with his Poison Attack.
* Corrosive Skin reduces damage from Dragon Fire and inflicts damage to him.
* Nethertoxin disables Dragon Blood, negating his main survivability.
* Viper Strike and
Poison Attack can severely slow him down even with his Elder Dragon Form.
Additional:
* Dragon Knight is easily harassed by Poison Attack after the laning stage ends.
* Corrosive Skin protects Viper from
Breathe Fire and returns damage.
* Nethertoxin mitigates
Dragon Blood, Dragon's Knight main source of armor and health regeneration.
* Between Poison Attack and
Viper Strike, Viper can keep Dragon Knight permanently slowed even in
Elder Dragon Form.
* Heroes who rely strongly on melee physical damage will fare badly against Omniknight's Guardian Angel: Phantom Assassin,
Juggernaut,
Dragon Knight,
Lycan,
Ursa,
Troll Warlord
* Nethertoxin breaks Fury Swipes, making Viper a decent counter to Ursa in a laning stage.
* Viper Strike is a strong, undispellable slow, making it much easier to kite Ursa for everyone.
* Heroes who rely strongly on melee physical damage will fare badly against Omniknight's Guardian Angel: Phantom Assassin,
Juggernaut,
Dragon Knight,
Lycan,
Ursa,
Troll Warlord
* Heroes with Break abilities will prevent Slark from regenerating and gaining Essence Shift stacks: Viper,
Shadow Demon, etc.
Additional:
* Nethertoxin negates
Essence Shift and the regeneration aspect of
Shadow Dance.
* Dark Pact doesn't mean a lot against Viper's ubiquitous slows.
* Viper becomes a relevant presence in team fights before Slark can procure his standard items (e.g. Shadow Blade).
* Slark's dependence on Pounce and close range makes him very easy to hit with Purification and
Hammer of Purity.
* Slark's damage, even with a high count of Essence Shift stacks, is easily negated by Omniknight's heals and Guardian Angel.
* Heroes that can slow Charge of Darkness by a huge amount: Venomancer,
Viper,
Dazzle,
Arc Warden,
Lion.
* In the early game, Omniknight can look like an easy target for Spirit Breaker, but with Purification and
Hammer of Purity, what could be an opportunity could quickly turn into disaster.
* Repel can be used to counter Charge of Darkness by minimizing the damage and lowering the stun duration with status resistance.
* Spirit Breaker's Greater Bash from all sources (Charge of Darkness or normal attacks) will deal no damage at all if Omniknight and his allies are protected with Guardian Angel.
* Due to this, Spirit Breaker's damage will always be lower when targeting Omniknight.
* Viper's poison abilities can slow Bounty Hunter's movement speed and allows to chase him with True Sight items.
* Nethertoxin can break Jinada, and the silence from level 25 prevents Bounty Hunter from using all of his spells.
* Omniknight with
Heavenly Grace
* Heroes that can remove the Track debuff with their skills:
* Abaddon with
Aphotic Shield and
Borrowed Time
* Huskar with
Life Break
* Juggernaut with
Blade Fury
* Legion Commander with
Press the Attack
* Lifestealer with
Rage and
Infest
* Naga Siren with
Mirror Image
* Omniknight with
Heavenly Grace
* Oracle with
Fortune's End and
False Promise
* Phantom Lancer with
Doppelganger
* Slark with
Dark Pact
* Ursa with
Enrage
* Weaver with
Time Lapse
* Tidehunter with
Kraken Shell when damage received reaches the threshold.
* Viper does large amounts of magic damage over time, meaning that if a Necrophos uses Ghost Shroud, Viper's abilities will greatly reduce Necrophos survivability, and may actually kill him.
* By the same token, Viper can use his Viper Strike on Necrophos if he attempts to heal himself with Ghost Shroud, and depending on any other effects Necrophos may have from him, (IE:
Poison Attack,
Corrosive Skin), Viper can often kill Necrophos while he is in his Ghost Shroud.
* Viper's Corrosive Skin helps him take reduced damage from all of Nercophos spells that deal magical damage, which is Necrophos's only source of damage.
Additional:
* Nethertoxin prevents
Heartstopper Aura from dealing damage or healing Necrophos.
* Viper's magic damage is amplified whenever Ghost Shroud is used.
* Corrosive Skin makes Viper tankier against
Death Pulse and
Reaper's Scythe.
* Heroes who possess abilities that can save targets from being killed by Reaper's Scythe: Abaddon,
Bane,
Outworld Destroyer,
Shadow Demon,
Omniknight, etc.
* Heroes that can apply early pressure before Phantom Assassin has farm are massive threats: Axe,
Viper,
Meepo,
Pugna,
Slark etc.
* Purification and
Hammer of Purity can easily catch Phantom Assassin once she jumps with
Phantom Strike in to attack.
* Heavenly Grace can be used to dispel slow from
Stifling Dagger, and disables from the items Phantom Assassin relies on.
* Phantom Assassin depends entirely on physical attacks and her damage output is 100% physical. Therefore, since she has no any sources of magical damage output and hates going for items that deal magical damage like Dagon,
Ethereal Blade and
Revenant's Brooch,
Guardian Angel will render her completely useless.
* Purification,
Heavenly Grace and
Guardian Angel can be used to save an allied hero before Phantom Assassin can finish them off with
Coup De Grace.
Additional:
* Purification and
Hammer of Purity can easily catch Phantom Assassin once she jumps with
Phantom Strike in to attack.
* Heavenly Grace can be used to dispel slow from
Stifling Dagger, and disables from the items Phantom Assassin relies on.
* Phantom Assassin depends entirely on physical attacks and her damage output is 100% physical. Therefore, since she has no any sources of magical damage output and hates going for items that deal magical damage like Dagon,
Ethereal Blade and
Revenant's Brooch,
Guardian Angel will render her completely useless.
* Purification,
Heavenly Grace and
Guardian Angel can be used to save an allied hero before Phantom Assassin can finish them off with
Coup De Grace.
* Melee heroes with low mobility can be kited and killed by Viper: Treant Protector,
Kunkka,
Alchemist,
Troll Warlord,
Wraith King,
Tiny,
Sven.
* Guardian Angel makes allies immune to all physical damage, effectively causing Tidebringer to do no damage.
* Purification is a powerful, pure damaging heal that can save Omniknight's allies after Kunkka's large damage.
* Heroes with large magical AoE damage will fare well against Omniknight: Lich,
Ancient Apparition,
Jakiro,
Disruptor.
* Corrosive Skin minimizes the damage Viper takes from all of Disruptor's skills.
* Purification allows Omniknight to keep a hero trapped in the Static Storm alive.
* Any hero who can survive Magnus's initiations and manfight him: Huskar,
Faceless Void,
Weaver,
Abaddon,
Troll Warlord,
Alchemist,
Dragon Knight,
Night Stalker,
Viper.
Additional:
* Most of Magnus' abilities except Empower will trigger damage through
Corrosive Skin.
* Poison Attack and
Viper Strike can slow Magnus during
Skewer, as well as putting his
Blink Dagger on cooldown, preventing him from initiating or re-initiating.
* Any hero who can counter-initiate in anticipation without getting caught in Reverse Polarity: Sven,
Omniknight,
Enigma,
Luna,
Naga Siren,
Mars,
Jakiro,
Venomancer,
Elder Titan,
Faceless Void,
Rubick,
Keeper of the Light,
Pugna,
Invoker,
Spectre,
Alchemist,
Treant Protector,
Lina,
Oracle,
Zeus,
Shadow Shaman,
Phoenix,
Razor,
Huskar,
Batrider,
Kunkka,
Tidehunter,
Wraith King,
Sand King,
Medusa,
Dawnbreaker.
* Melee heroes with low mobility can be kited and killed by Viper: Treant Protector,
Kunkka,
Alchemist,
Troll Warlord,
Wraith King,
Tiny,
Sven.
* Heroes who rely strongly on melee physical damage will fare badly against Omniknight's Guardian Angel: Phantom Assassin,
Juggernaut,
Dragon Knight,
Lycan,
Ursa,
Troll Warlord
* Nethertoxin prevents Timbersaw from gaining stacks on Reactive Armor.
* Corrosive Skin will protect Viper from Techies' magical damage.
* Even though Reactive Tazer will disarm Viper if he attacks Techies with Poison Attack, he does lots of damage with his other abilities that can still kill Techies.
* The pure damage provided by Purification is a great addition for killing Ember Spirit, as well as a good way of saving teammates.
* Guardian Angel will temporarily save his allies from Sleight of Fist's physical damage, and Ember Spirit is not a hero that will get
Orchid Malevolence to counter it.
* Tiny has low movement speed and attack speed, making him vulnerable to Viper's slows.
* Corrosive Skin provides magic resistance to lower Tiny's magic burst damage.
* In team fights, Guardian Angel renders Drow Ranger's physical damage useless, and Drow Ranger has no way to purge it. And to make thing worse, Drow Ranger is not a common
Nullifier wielder to counter this problem at all.
* Nethertoxin cancels out
Kraken Shell and stops the hard dispel from passively activating, preventing Tidehunter from functioning as a frontline tank.
* Anchor Smash is mostly irrelevant against a ranged hero.
* Tidehunter relies on the threat of Ravage, which has an obscenely long cooldown. Viper can exploit the downtime with his short cooldowns.
* Purification does great damage to Clockwerk when fighting an enemy inside Power Cogs.
* Due to Clockwerk's very low damage output, Omniknight will have more than enough time to Purification and
Heavenly Grace any enemy hero Clockwerk initiates on.
* For the same reasons, Omniknight also makes a powerful ally for Clockwerk when the situation is reversed.
* Guardian Angel completely negates all physical damage, including
Omnislash.
Additional:
* Omnislash (and
Swiftslash) is blocked by Guardian Angel.
* Viper's Poison Attack and
Viper Strike that can slow Razor, and is one of the few heroes that can keep him immobile.
* Altogether, Viper's skills reduce Razor's attack speed, heavily reducing the benefit of the damage drain from Static Link.
Additional:
* Storm Surge is counteracted by
Nethertoxin, leaving Razor without faster MS.
* Static Link's damage drain doesn't bother Viper a lot as most of his early to mid game damage is magical.
* Poison Attack makes it hard for Void Spirit to lane against him.
* Corrosive Skin reduces the magical damage from Void Spirit's spells.
* Nethertoxin disables Bristleback's passive.
* Viper Strike and
Poison Attack slow down Bristleback's movement speed, making him unable to get out from Nethertoxin.
Additional:
* Nethertoxin disables
Bristleback and prevents
Warpath from building stacks. Besides losing his defensive passive, Bristleback also loses his ability to build up damage over lengthy battles.
* Viper can perpetually kite Bristleback with Poison Attack and
Viper Strike.
* Nethertoxin breaks both Necromastery and Presence of the Dark Lord, reducing his damage massively.
* Corrosive Skin gives Viper bonus Magic Resistance against Shadowraze and Requiem of Souls.
* Viper can easily take advantage of Shadow Fiend's lack of escape and mobility spells with Viper Strike and
Poison Attack. Poison Attack also serves as a great way to harass Shadow Fiend.
* The damage over time from Viper's Poison Attack and
Viper Strike rapidly wear down Refraction charges, allowing Templar Assassin to be damaged. Additionally,
Corrosive Skin causes her attacks to apply damage overtime on her as well.
* Nethertoxin is a big threat to Templar Assassin. Her initially low range making it very hard to deal against Nethertoxin in the laning phase. At any stage of the game, a Nethertoxin can always force her to undo her Meld.
Additional:
* All of Viper's abilities quickly burn through Refraction charges.
* Templar Assassin's short range, aside from Psi Blades' spill damage, makes her vulnerable to
Poison Attack harassment.
* Templar Assassin traditionally forgoes health and armor items for damage. Outside of Black King Bar, Viper will almost always be able to kill her when
Refraction is down.
* Guardian Angel completely counters Winter's Curse if Omniknight is able to cast it.
Additional:
* Guardian Angel completely counters Winter's Curse, allowing his team to survive Winter Wyvern's initiation.
* Purification and
Heavenly Grace are very useful against Arctic Burn, Splinter Blast and Winter's Curse as well.
* Guardian Angel can negate all the physical damage output during Chronosphere.
* When Faceless Void Time Walk's on top of an enemy it becomes a perfect target for Purification
Additional:
* Guardian Angel can negate all the physical damage output from Faceless Void during Chronosphere.
* If Faceless Void Time Walks on top of an ally Purification + Heavenly Grace can turn the fight around.
* Guardian Angel's near invulnerability denies Bloodseeker the bonuses from Thirst, preventing him from gaining the upper hand in teamfights.
* Purification's pure damage makes it hard for Bloodseeker to pursue enemies, and prevents him from replenishing his health by finishing off enemies.
* Corrosive Skin gives Viper additional resistance to Phoenix's magical damage, and since they deal damage over time, Phoenix would be constantly afflicted by his passive's own debuff, making him not an ideal target for Phoenix's harassment. Phoenix's abilities also constantly drain its own health away, becoming more vulnerable to
Poison Attack.
* Guardian Angel nullifies the physical damage from Exorcism during teamfights. And when upgraded with
Aghanim's Scepter, it also prevents Death Prophet from pushing towers. However, Death Prophet can partially counter this issue with
Eul's Scepter of Divinity, a common item on Death Prophet.
* Heavenly Grace dispels
Silence.
Additional:
* Exorcism's damage is blocked by Guardian Angel.
* Heavenly Grace can dispel
Silence allies if Omniknight is able to cast it.
* Nethertoxin disables Dawnbreaker's
Luminosity. Since she's a melee hero, she needs to close gap to attack and Nethertoxin will be bad for her since she cannot heal.
* Viper Strike and
Poison Attack will severely slow her down and combined with
Nethertoxin, it will be her death sentence (unless her Celestial Hammer or Solar Guardian are off cooldown). Besides that, chasing her down will be easy due to the slow.
* Because Poison Attack has no cooldown,
Aphotic Shield is ineffective as a hard dispel.
* Nethertoxin prevents
Borrowed Time from activating passively and blocks
Curse of Avernus
* Guardian Angel negates most of Gyrocopter's physical АоЕ damage.
* Heavenly Grace dispels Homing Missile stun.
* Poison Attack and
Viper Strike allowing to kite and slow Earthshaker significally, putting
Blink Dagger on cooldown and preventing him from initiating or re-initiating.
* Nethertoxin breaks Aftershock. The silence from Level 25 talent also prevents Earthshaker from initiating or re-initiating.
Additional:
* Being a melee hero, Earthshaker's movement is liable to suppression by Poison Attack and
Viper Strike.
* Earthshaker's kit, with the exception of Enchant Totem, deals magic damage.
Corrosive Skin effectively blunts his killing potential with a standard Blink combo among other things.
* Nethertoxin disables
Aftershock, which removes the stun and bonus damage from
Enchant Totem and
Echo Slam.
* Nethertoxin prevents the lifesteal from Ransack.
* Meepo and his clones have a lack of magic resistance, so they're vulnerable to Poison Attack &
Viper Strike directed onto one clone.
* His Poison Attack is very useful against Huskar, since he tends to stay at low health.
* Nethertoxin disables passive skills like Berserker's Blood.
* It is dangerous for Huskar to jump on Viper because Corrosive Skin and
Viper Strike with the slowdown of movement and attack speed which usually will be deadly for Huskar.
Additional:
* Nethertoxin disables
Berserker's Blood, which Huskar relies upon for attack speed and healing.
* The damage from Burning Spear and
Life Break is largely absorbed by
Corrosive Skin. It also will return some damage, making it risky to use Burning Spears in the laning stage.
* Because Huskar wants to be on low health for Berserker's Blood, he is particularly vulnerable to
Poison Attack.
* Corrosive Skin severely reduces Zeus's damage output throughout the game.
* During the laning stage, Viper can abuse Zeus' reliance on spells by hugging the creep wave. Zeus will take constant damage over time from Corrosive Skin unless he drives Viper from the lane or returns to farming in his absence.
* Prior to buying Blink Dagger or
Force Staff, Zeus is fragile and possesses low mobility. Any of Viper's numerous slows can set up an easy kill.
Additional:
* Corrosive Skin counters Zeus in lane by canceling the effects of
Clarity as Zeus relies on Arc Lightning to farm and secure last hits.
* Corrosive Skin also increases Viper's magic resistance to shrug off Zeus's magical nukes.
* Nethertoxin breaks Static Field.
* Due to Zeus' poor mobility, Viper Strike will cripple Zeus and will allow Viper and his teammates to land a lot of attacks.
* Nethertoxin disables Vengeance Aura.
* Vengeful Spirit has no mobility spells aside from Nether Swap, which Viper can take advantage of with his slows.
* Viper can easily bully Vengeful Spirit out of a lane with Poison Attack.
Additional:
* Nethertoxin prevents the attack damage bonus from
Vengeance Aura and the components of
Nether Swap.
* Both Magic Missile and
Wave of Terror are counteracted by
Corrosive Skin, making Vengeful Spirit's fighting harder against Viper.
* Nethertoxin cuts off
Gravekeeper's Cloak, Visage's primary defense mechanism.
* Viper can ignore Grave Chill's attack speed slow with his magic damage output.
Additional:
* Since Visage is a slow hero, Viper can easily kite him with
Poison Attack and
Viper Strike while successfully chipping away at Gravekeeper's Cloak.
* Nethertoxin removes all layers of Gravekeeper's Cloak, leaving Visage exposed.
* Corrosive Skin makes Viper highly resistant to Soul Assumption.
* Doom applies a basic dispel upon cast, so it can remove
Guardian Angel.
* Casting Doom on Omniknight will also prevent him from healing allies with
Purification, or casting buffs like
Heavenly Grace and
Guardian Angel, basically turning him into a harmless creep.
Additional:
* Doom turns Omniknight into a walking creep, or completely takes out his buffed cores, also removing Heavenly Grace and Guardian Angel in the process.
* With Devour used on Satyr Banisher, Doom will have access to Satyr Banisher's
Purge, which will allow him to remove Heavenly Grace and Guardian Angel.
* The slow applied from Corrosive Skin offsets the movement speed bonus granted by Scorched Earth and the tick-based damage from Infernal Blade and Doom will continually slow Doom down. This allows Viper, much like Sniper, to 'kite' Doom and keep him at a safe distance between the two. Additionally,
Corrosive Skin applies an attack-speed slow which is fairly crippling to a hero such as Doom that, naturally, has a high base attack-time, poor agility gain and builds little attack-speed items.
* Since Doom does not disable auto-cast abilities, Viper's Poison Attack will continue to work. Doom may find it hard to close the distance between himself and Viper, and thusly difficult to effectively lockdown and continually deal damage through his abilities.
* Heroes with the ability to heal allies, or those with good defensive abilities: Chen,
Dazzle,
Io,
Oracle,
Omniknight,
Witch Doctor,
Winter Wyvern,
Abaddon, etc.
* Heroes who can easily harass Crystal Maiden out of lane in the early game (Clinkz,
Viper) can prevent Crystal Maiden from being able to level effectively, and can ultimately slow down her level 6, 12, and 18 to a point where enemy carries already have items to address her ultimate.
* Heroes with spell immunity or pseudo-blinks which provide invulnerability: Lifestealer,
Juggernaut,
Omniknight,
Huskar , and
Tusk have spells which allow them to easily escape Dream Coil.
* Viper can bully Alchemist out of mid lane quite easily, forcing him to either retreat into jungle, or stay harassed in lane, and get very few last hits. Vipers break also completely disables
Greevil's greed which prevents Alchemist to earn his amazing amounts of money.
* Although Sven relies often on physical damage, an Aghanim's Scepter upgraded
Storm Hammer can dispel Guardian Angel with its wide radius.
* Melee heroes with low mobility can be kited and killed by Viper: Treant Protector,
Kunkka,
Alchemist,
Troll Warlord,
Wraith King,
Tiny,
Sven.
* Purification can heal allies while dealing pure damage to Sven.
* Heavenly Grace can remove Storm Hammer's debuff immediately or make it a very mediocre stun.
* Guardian Angel negates Sven's massive damage during God's Strength.
* It should also be noted Sven can remove Omniknight's active spells with Aghanim's Scepter.
* As Viper focuses on single-target damage, he has trouble fighting off Phantasm illusions.
* Reality Rift counteracts Viper's slows and reduces his already low durability against physical damage.
Additional:
* Viper has no response to the standard initiation combo of Reality Rift into
Chaos Bolt.
* Phantasm and
Chaos Strike can eliminate Viper almost instantly with it's damage output.
* Besides Nethertoxin, Viper has no other ways of dealing with Phantasm.
* Heroes with Attack speed decreasing skills: Jakiro,
Viper
Lich
* Purification heals a teammate targeted by Reality Rift and heavily damages Chaos Knight and his illusions in the process.
* Guardian Angel blocks all of Chaos Knight's damage for a long duration.
Additional:
* Phantasms can be easily killed with Purification.
* Heavenly Grace dispels the stun from Chaos Bolt and the armor reduction from
Reality Rift.
* Guardian Angel works well against Chaos Knight's overwhelming reliance on physical burst damage.
* Hand of God has a long cooldown, so damage over time spells can be hazardous for Chen, forcing him to use it prematurely: Jakiro,
Venomancer,
Viper,
Dazzle,
Phoenix.
* Melee heroes with low mobility can be kited and killed by Viper: Treant Protector,
Kunkka,
Alchemist,
Troll Warlord,
Wraith King,
Tiny,
Sven.
* Heroes with large magical AoE damage will fare well against Omniknight: Lich,
Ancient Apparition,
Jakiro,
Disruptor.
* Corrosive Skin minimizes the damage Viper takes from all of Ancient Apparition's abilities.
* Ancient Apparition's slow movement speed, squishy nature, and lack of escape abilities can easily be taken advantage of through Poison Attack and
Viper Strike.
* Heroes who can harass Omniknight out of lane will keep him weak in the mid game: Viper,
Venomancer,
Clinkz.
* Corrosive Skin means Viper can often outlast Venomancer in a battle of attrition.
* Venomancer has no mobility without items, which makes him vulnerable to constant slows.
* Heroes who can drain mana can make Omniknight useless after he uses one or two abilities: Lion,
Anti-Mage,
Nyx Assassin.
* Corrosive Skin minimizes the damage from
Impale and
Mind Flare.
* Nyx Assassin cannot survive several poison damage-over-time, even Spiked Carapace is activated.
* Heroes who do not have nor rely on passive abilities make Nethertoxin much less effective: Clinkz,
Pugna,
Nature's Prophet,
Dark Seer,
Lycan,
Tusk
* Guardian Angel completely negates all of Lycan's damage since Lycan mainly deals physical damage.
* Purification can also be a problem for Lycan, as Purification deals damage around the target, which poses a problem for him and his summons.
* Jingu Mastery will still add stacks even through Guardian Angel.
* Monkey King can join a fight whenever he chooses to, meaning he can simply go directly onto Omniknight.
* During the laning phase, Jingu Mastery with Boundless Strike will kill off Omniknight, while Purification is weak.
* Heavenly Grace is useless against Monkey King's ultimate and Jingu Mastery bonuses.
* Nethertoxin prevents the buildup of Jingu Mastery stacks.
* Viper's poison magical damage-over-time stops Monkey King from using Tree Dance. It also ignores the extra armor bestowed by Wukong's Command.
Additional:
* Nethertoxin prevents the buildup of
Jingu Mastery stacks.
* Monkey King's high base movement speed is of little worth against the array of slows Viper possesses.
* All of Viper's magical damage over time stops Monkey King from using Tree Dance. It also ignores the extra armor bestowed by
Wukong's Command.
* Guardian Angel is generally useless against Lina as she primarily relies on magical damage. Lina can also dispel it with
Eul's Scepter of Divinity as she is a hero who often goes for it.
Eul's Scepter of Divinity can later be upgraded into
Wind Waker, which will allow Lina to escape from Omniknight.
* Laguna Blade can often finish off Omniknight's allies before he can save them with
Purification and
Heavenly Grace. This can become even worse once Lina picks
Laguna Blade damage is pure and pierces spell immunity talent, which will allow it to ignore both, any form of spell immunity and
Guardian Angel.
* Nethertoxin prevents buildup of Fiery Soul stacks.
* Corrosive Skin provides magic resistance against Lina's spells.
* Poison Attack and
Viper Strike can burn away Lina's small health pool.
* Viper's frailty and low mobility make him an enticing Duel target and Corrosive Skin doesn't protect him against Legion Commander physical attacks.
* Press the Attack can dispel Poison Attack.
* Viper slows can easily negate by Overwhelming Odds movement speed.
* Purification prevents Legion Commander from killing her target, and will always hit her during Duels.
* Guardian Angel completely wastes Duel's duration and can save an ally across the map when upgraded with
Aghanim's Scepter.
Additional:
* Both Guardian Angel and Purification are perfect counters against Duel.
* Voodoo Restoration heals to counter damage over time of Viper abilities.
* Viper has no way to cancel Death Ward, even through Rod of Atos.
* Guardian Angel protects allies from Death Ward's physical damage.
* Purification and
Heavenly Grace will most likely save teammates from dying to Maledict.
* Viper cannot interrupt heroes with powerful channeling abilities: Bane,
Enigma,
Shadow Shaman,
Warlock
* Omniknight can dispel Hex or Shackles with
Heavenly Grace. He can also heal teammates which you disabled. The same goes to
Abaddon's
Aphotic Shield .
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Viper
* Naga Siren can easily disjoint, and dispel
Corrosive Skin with Mirror Image.
Aghanim's Shard upgraded
Song of the Siren heal her allies before Viper can finish them off.
* Since Viper is mostly a single-target hero, he will not have almost any chance against Naga Siren because she is an illusion based hero.
* Viper has no burst damage, so Naga Siren will have plenty of time to use
Omniknight
* Even though Naga Siren relies on direct attacks to deal damage for most of the time, Song of the Siren allows her to easily waste
Guardian Angel.
Heavenly Grace. However, Ensnare is dispellable with any dispel, and so can be dispelled by Heavenly Grace.
Diffusal Blade carriers, the bane of every hero with a small mana pool.
Song of the Siren can be used to time out
Guardian Angel, giving Naga Siren's team an easy opportunity to counter-initiate.
Radiance allows it's owner to deal magical damage to multiple enemy heroes at once, and since Naga Siren often buys it,
Guardian Angel is not a very good ability for protection against Naga Siren.
Radiance,
Ethereal Blade,
Dagon and
Veil of Discord) can render
Guardian Angel useless. Although Nuker is not a role Naga Siren should be playing.
* Ensnare fully works on targets affected with
* As an agility hero that relies on illusions, Naga Siren is one of the most natural
Additional:
* Although Naga Siren relies mostly on physical damage,
*
* Likewise, Nuker build Naga Siren (which primarly consists of items such as