Kunkka
* With his 
Take Aim, Sniper can simply sit out of your ability range and deal massive damage if not killed first.
* 
Assassinate can target allies who are still alive with low health because of Ghostship's buff.
* 
Headshot makes it harder for Kunkka to position/escape and makes it hard for Kunkka to hit with Tidebringer.
Dark Seer
* A Sniper who is somewhat competent at positioning is hardly going to be affected by any of Dark Seer's spells thanks to Take Aim.
* However, an illusion of Sniper made with Wall of Replica is extremely powerful, and hard to deal with.
Kunkka
* Similarly, they can negate your X Marks The Spot & Torrent combo by protecting your target when you use Return. Good candidates to negate your combo include 
Outworld Destroyer and his 
Astral Imprisonment, and 
Shadow Demon and his 
Disruption.
* Heroes with hide abilities can often dodge a Ghostship just before it hits.
* Similarly, they can negate your X Marks The Spot & Torrent combo by protecting your target when you use Return. Good candidates to negate your combo include Outworld Destroyer and his Astral Imprisonment, and Shadow Demon and his Disruption.
* A 
Eul's Scepter of Divinity can also do the trick, but, unlike the previously mentioned abilities, you can only use it on yourself and not your allies.
Dark Seer
* The constant dispel from Demonic Purge will make any attempt to save the victim or himself by 
Surge become futile. For what it's worth, Demonic Purge will also dispel 
Ion Shell.
Dark Seer
* 
Fortune's End dispels Ion Shell and Surge, making any gank attempt on Dark Seer in the laning phase likely to succeed.
* 
Fate's Edict prevents all magical damage that comes from Dark Seer's abilities.
* Fortune's End dispels Ion Shell on creeps, which Dark Seer relies on to farm and zone.
Additional:
* Fortune's End can dispel Ion Shell, a skill that helps Dark Seer immensely in the laning phase, as well as Surge, a move-speed buff, effectively allowing Oracle to control Dark Seer, especially in the laning phase.
Kunkka
* 
Blade Fury negates Kunkka's X Marks the Spot.
* Kunkka has no way to dodge 
Omnislash.
* Kunkka has no way to hit 
Healing Ward directly in battle, and it mitigates Ghostship and Tidebringer's damage.
Kunkka
* Since Tidebringer has a 4 second cooldown, Kunkka has little availability to manfight Huskar.
Kunkka
* Astral Imprisonment can allow Outworld Destroyer to save himself or allies from Kunkka's full kit.
* 
Sanity's Eclipse deal a large amount of damage, as Kunkka's mana pool is much smaller than Outworld Destroyer's.
* 
Arcane Orb deals pure damage, shredding through Kunkka and his team even with Ghostship's buff.
Kunkka
* Kunkka relies on his powerful AOE spells to turn the tides of teamfights. He cannot use them while silenced.
* 
Last Word can mess up Kunkka's ability synergy, silencing him in the middle of his strong combo.
* 
Global Silence can disable Kunkka's spell casting from anywhere on the map, even if Kunkka is spell immune at the time.
Kunkka
* 
Leap allows Mirana to easily escape Torrent and Ghostship.
Kunkka
* Ursa's massive physical damage can destroy Kunkka quickly.
* 
Enrage can be activated before being hit by Ghostship to prevent most of the damage.
* 
Earthshock slows Kunkka's movement speed. With no escape abilities, Kunkka is easy prey.
Kunkka
* 
Supernova negates Kunkka's combo entirely, as it can't be affected by spells while using Supernova.
* 
Icarus Dive also allows Phoenix to dodge Ghostship and Torrent.
Kunkka
* 
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.
Kunkka
* Clinkz's high damage output and insane attack speed late-game can take Kunkka out of the fight before it begins.
* 
Burning Barrage and 
Searing Arrows together can kill allies easily even under Ghostship's buff.
* 
Skeleton Walk can allow Clinkz to make a quick escape after Kunkka's combo, or even avoid it all together.
Kunkka
* Timbersaw Defeats Kunkka on the center line, due to the fact that he has a huge resistance to physical damage by 
Reactive Armor, which is why 
Tidebringer almost does not break through Timbersaw, and due to 
Whirling Death Timbersaw can very much break through Kunkka and force him to leave the line, or spend money on 
Tango.
Additional:
* Timbersaw easily beats Kunkka on the midlane, due to the fact that he has huge physical damage resistance from Reactive Armor, which is why Tidebringer almost does not break through Timbersaw, and due to Whirling Death and Kunkka being a strength hero, Timbersaw can very much break through Kunkka and force him to leave the lane, or spend money on Tango.
Dark Seer
* Dark Seer's only disable is Vacuum. Though he starts off with high armor and health, he'll eventually have a hard time dealing with high mobility heroes such as 
Weaver or 
Queen of Pain.
Dark Seer
* Heroes with fast movement abilities will suffer huge damage when afflicted by Rupture: 
Spirit Breaker, 
Earth Spirit, 
Dark Seer.
Additional:
* 
Rupture can deal a lot of damage to either a surged Dark Seer or his allies and prevent the target from getting into position.
Dark Seer
* Strong laners are usually at a disadvantage because of how well Sven can jungle. Heroes such as Dark Seer. 
Underlord and 
Legion Commander may find that later Sven takes care of them very quickly after some jungle farming.
Dark Seer
* In general, heroes who are melee with no way to fight back can be very easily poked by Monkey King to gain his Jingu Mastery stacks: Dark Seer, 
Riki, 
Rubick.
Dark Seer
* Abilities that deal low damage with high amounts of instances are irrelevant against Pudge during Flesh Heap's active: 
Gyrocopter's 
Rocket Barrage and Dark Seer's Ion Shell are just a couple examples.
Kunkka
* 
Rage negates Kunkka's X Marks the Spot.
* As a strength hero with high strength gain and very little armor, as well as low agility gain, Kunkka is vulnerable to Lifestealer's 
Feast and 
Open Wounds.
Dark Seer
* Heroes with escape abilities: 
Anti-Mage Dark Seer 
Slark 
Storm Spirit 
Windranger Weaver can kite Lifestealer due to him having no lockdown.
Dark Seer
* Dark Seer's strength lies in his high-mana cost skills. So 
Mana Break can be a great nuisance for him, since it can reduce his mana and prevent him from casting his spells.
* 
Mana Void can deal a lot of damage if Dark Seer spent a lot of mana on his abilities.
Kunkka
* 
Kunkka can bring Anti-Mage back with 
X Marks the Spot, effectively negating Blink or forcing him to wait out the debuff before Blinking.
Kunkka
* X Marks the Spot prevents Broodmother from escaping.
* Tidebringer can clear Broodmother's spiders if they get in range.
Additional:
* Kunkka's entire kit is great for taking out multiple units at once.
* Tidebringer's cleave will split through a wave of spiderlings.
* X Marks the Spot is great for dragging Broodmother back out of her web for Kunkka's team to set up on her.
* Torrent and Ghostship will demolish any spiderlings within the radius.
Dark Seer
* Ion Shell zones out Broodmother in the laning phase, and can kill her spiderlings if used on one Spiderling in a group.
* 
Vacuum can pull Broodmother out of the treeline.
Additional:
* Ion Shell is a very powerful weapon against Broodmother's Spiderlings and makes her laning much harder.
Kunkka
* X Marks the Spot is good to prevent a single meepo from escaping from a deadly situation.
* Tidebringer, Torrent and Ghostship destroys Meepo's clones.
Additional:
* Tidebringer's cleave damage can wear down Meepo's clones quickly. It can also give Meepo problems in the lane, due to his melee range and initially low health pool.
* 
Ghostship and 
Torrent can effectively disable Meepo while dealing heavy damage.
* X Marks the Spot prevents attempts to escape using Poof.
Dark Seer
* Dark Seer can take great advantage of 
Divided We Stand by putting an Ion Shell on a clone in order to harass them effectively.
* Vacuum can take a single Meepo and disable him for Dark Seer and his teammates to take out.
Kunkka
* Tidebringer, Torrent and Ghostship destroys Phantom Lancer's illusion army.
* 
Phantom Lancer can't escape with 
Doppelganger under your X Marks the Spot, but can use it to dodge it.
Additional:
* Tidebringer and Kunkka's AoE abilities in general are effective in clearing Phantom Lancer's illusions.
Dark Seer
* Heroes that rely on illusions typically spawn very strong illusions inside Dark Seer Wall of Replica that he can use against them or their team: Phantom Lancer, 
Chaos Knight, 
Naga Siren, 
Terrorblade.
Additional:
* Ion Shell helps taking down illusions quickly, making it easy to identify the real Phantom Lancer.
* Surge allows Dark Seer and his teammates to run away from Phantom Lancer, who relies on his 
Phantom Rush to chase enemies.
Kunkka
* Heroes with strong area-of-effect damage can make quick work of Chen's converted creeps and at same time gain farm: 
Magnus, 
Jakiro, 
Shadow Fiend, Kunkka, 
Luna, 
Dragon Knight, 
Medusa, 
Alchemist.
Dark Seer
* Dark Seer's Vacuum and Ion Shell can clear a wave of Chen's Creeps effectively.
* Surge applies haste movement and negates the slow from 
Penitence, allowing Dark Seer to easily escape from Chen and his creeps.
* Dark Seer's full combo from Dark Seer's Vacuum, 
Wall of Replica and 
Normal Punch from 
Aghanim's Scepter can often kill Chen or any of his allies before he can save them with 
Hand of God.
Additional:
* Dark Seer's Vacuum and Ion Shell can clear a wave of Chen's Creeps effectively.
* Surge applies haste movement and negates the slow from Penitence, allowing Dark Seer to easily escape from Chen and his creeps.
* Dark Seer's full combo from Dark Seer's Vacuum, Wall of Replica and Normal Punch from Aghanim's Scepter can often kill Chen or any of his allies before he can save them with Hand of God.
Kunkka
* Windranger can't escape 
Windrun X Marks the Spot with combo Torrent or Ghostship trap.
Dark Seer
* With Normal Punch from Aghanim's Scepter, Dark Seer can gain an advantage against heroes who rely on evasion as Normal Punch has true strike: 
Phantom Assassin, Windranger, 
Hoodwink.
Kunkka
* Spectre can't escape with 
Spectral Dagger under X Marks the Spot.
* Kunkka can dominate Spectre's lane using Tidebringer and gain an advantage.
* Ghostship helps your team soak up damage from 
Haunt.
Dark Seer
* Dark Seer can pull together Spectre's illusions with Vacuum, and Wall of Replica creates an illusion of Spectre that deals massive damage.
Kunkka
* Tidebringer, Torrent and Ghostship destroys Chaos Knight's 
Phantasm army all through the game.
Dark Seer
* Heroes that rely on illusions typically spawn very strong illusions inside Dark Seer Wall of Replica that he can use against them or their team: Phantom Lancer, Chaos Knight, Naga Siren, Terrorblade.
Kunkka
* Ghostship helps your team soak up damage from 
Chaotic Offering and hit summons hard.
* Tidebringer clears summons later in the game.
* Most of your spells can interrupt 
Upheaval.
Dark Seer
* Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: 
Beastmaster, 
Broodmother, 
Enigma, 
Nature's Prophet, 
Visage, 
Warlock, 
Wraith King.
Additional:
* Surge allows for Dark Seer and his allies to escape from Upheaval due to it ignoring any slow.
Kunkka
* Heroes that can negate Hoodwink's mobility: Kunkka, 
Disruptor, 
Mars.
Dark Seer
* With Normal Punch from Aghanim's Scepter, Dark Seer can gain an advantage against heroes who rely on evasion as Normal Punch has true strike: Phantom Assassin, Windranger, Hoodwink.
Kunkka
* Similarly, heroes with low cooldown teleports can be afraid to split push against X Marks the Spot, such as 
Tinker and Nature's Prophet.
* In general, highly mobile heroes like Earth Spirit or Storm Spirit are at a disadvantage against X Marks the Spot.
* Similarly, heroes with low cooldown teleports can be afraid to split push against X Marks the Spot, such as Tinker and Nature's Prophet.
Dark Seer
* Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: Beastmaster, Broodmother, Enigma, Nature's Prophet, Visage, Warlock, Wraith King.
Kunkka
* Heroes with cleave or multi-target attacks can quickly take on Familiars and reduce Visage's firepower like Gyrocopter, Kunkka, Magnus and Medusa.
Dark Seer
* Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: Beastmaster, Broodmother, Enigma, Nature's Prophet, Visage, Warlock, Wraith King.
Dark Seer
* Ion Shell destroys 
Refraction's protection stacks in short time.
* Surge ignores the massive slow from 
Psionic Trap.
Kunkka
* Ghostship helps your team soak up damage from 
Epicenter, especially if he initiates during the battle.
* 
Sand King can't dodge X Marks the Spot - Torrent combo by his abilities. Torrent drags him out of his 
Sand Storm
Kunkka
* X Marks the Spot breaks Flaming Lasso when used on ally and can break if used on Batrider.
Kunkka
* Tidebringer's cleave will cripple any of his summons.
* Could potentially build Heaven's Halberd to cripple Lycan even more.
Additional:
* Tidebringer can be used to kill Lycan's summons.
* Can also build into 
Heaven's Halberd which will disable Lycan's auto attacks, crippling him even more.
Dark Seer
* Dark Seer's Vacuum and Ion Shell allows him to clear a wave of Terrorblade's illusions.
* Because Terrorblade often builds items that require 
Ultimate Orb like 
Manta Style and 
Eye of Skadi, Dark Seer can create a very strong illusion of Terrorblade with Wall of Replica and Normal Punch from Aghanim's Scepter.
* If Dark Seer can use Vacuum to help teammates land their AoE abilities, Terrorblade will be quickly killed before he even gets a chance to use Sunder.
Additional:
* Dark Seer's Vacuum and Ion Shell allows him to clear a wave of Terrorblade's illusions.
* Because Terrorblade often builds items that require Ultimate Orb like Manta Style and Eye of Skadi, Dark Seer can create a very strong illusion of Terrorblade with Wall of Replica and Normal Punch from Aghanim's Scepter.
* If Dark Seer can use Vacuum to help teammates land their AoE abilities, Terrorblade will be quickly killed before he even gets a chance to use Sunder.
Kunkka
* X Marks the Spot negates Stampede.
Kunkka
* The slow from Torrent makes Crystal Maiden's already bad movement speed even worse.
* Kunkka has many tools to interrupt Freezing Field (most notably Torrent, Ghostship and 
Torrent Storm from Aghanim's Scepter), as she is an easy target while channeling it.
* It is worth noting that most of Kunkka's abilities do not pierce through spell immunity, so purchasing a 
Black King Bar might help Crystal Maiden in this regard.
Dark Seer
* Venomancer is a low health hero and low range hero who is easy to harass with Ion Shell on a creep in the early game.
* Venomancer depends entirely on all his slows to keep distance or chase, but since Surge ignores slows, it is nearly impossible for Venomancer to hunt or run away from Dark Seer or his surged teammates.
Dark Seer
* Heroes without blink mechanisms or spell immunity will have a hard time positioning against 
Pit of Malice: 
Sven, 
Tiny, Wraith King, Dragon Knight, 
Meepo, 
Doom, 
Bounty Hunter, Dark Seer, 
Undying, Alchemist, Legion Commander.
Kunkka
* X Marks the Spot will return Underlord or his teammate if they escape with 
Fiend's Gate.
* Torrent, Ghostship, Torrent Storm from Aghanim's Scepter and 
Tidal Wave from 
Aghanim's Shard are all excellent abilities for intercepting Underlord and his team if Underlord chooses to travel to the designated point of the map with Fiend's Gate.
Dark Seer
* Heroes with strong area-of-effect damaging and/or disabling abilities will be able to intercept Underlord and his team when they exit from Fiend's Gate: Luna's Aghanim's Scepter upgraded 
Eclipse, 
Dawnbreaker's 
Solar Guardian, 
Axe's 
Berserker's Call, Mars's 
Arena of Blood, Jakiro's 
Macropyre, 
Dual Breath and 
Ice Path, Naga Siren's 
Song of the Siren, 
Razor's 
Eye of the Storm and 
Plasma Field, 
Lina's 
Light Strike Array, Broodmother's 
Spinner's Snare from Aghanim's Scepter, 
Elder Titan's 
Earth Splitter and 
Echo Stomp, Alchemist's 
Unstable Concoction and 
Acid Spray, Queen of Pain's 
Sonic Wave, Dark Seer's Wall of Replica and Vacuum, 
Venomancer's 
Noxious Plague and 
Poison Nova from Aghanim's Scepter, 
Oracle's Fortune's End and 
Rain of Destiny from Aghanim's Shard, 
Bloodseeker's 
Blood Rite, Enigma's 
Black Hole and 
Midnight Pulse, Shadow Fiend's 
Requiem of Souls, 
Batrider's Aghanim's Scepter upgraded 
Flaming Lasso, 
Firefly, 
Flamebreak and 
Sticky Napalm, 
Ancient Apparition's 
Ice Blast, Sand King's Epicenter, Sand Storm and 
Burrowstrike, Gyrocopter's 
Call Down, 
Ember Spirit's 
Sleight of Fist, 
Death Prophet's 
Exorcism and 
Silence, 
Monkey King's 
Wukong's Command, 
Crystal Maiden's 
Freezing Field, 
Muerta's 
The Calling, Medusa's 
Stone Gaze, 
Zeus's 
Nimbus from Aghanim's Scepter. 
Dark Willow's 
Bramble Maze, 
Pangolier's 
Swashbuckle, 
Grimstroke's 
Soulbind, 
Ink Swell and 
Stroke of Fate, 
Earthshaker's 
Echo Slam and 
Fissure, 
Puck's 
Dream Coil and 
Waning Rift, 
Winter Wyvern's 
Winter's Curse, Magnus's 
Reverse Polarity.
Kunkka
* Tidebringer will deal lots of damage to Alchemist before he builds physical survivability items.
* Torrent and X Marks the Spot can control Alchemist at all stages of the game before he has Black King Bar.
* Ghostship's rum buff will greatly reduce the Alchemist's damage output in teamfights including his Radiance.
Kunkka
* Ghostship can stun Faceless Void and give damage reduction to allies that are trapped during Chronosphere.
* Torrent can stun Faceless Void from outside Chronosphere.
* X Marks the Spot can bring back Faceless Void if he escapes using Time Walk.
* If the timing is right and there are allies to attack, a combination of X Marks the Spot, Ghostship, Torrent and Tidebringer can kill Faceless Void instantly.
Kunkka
* Tidebringer pressures Invoker easily in lane due to Invoker's low health and armor in the early game.
Dark Seer
* Heroes that rely on illusions typically spawn very strong illusions inside Dark Seer Wall of Replica that he can use against them or their team: Phantom Lancer, Chaos Knight, Naga Siren, Terrorblade.
Dark Seer
* Heroes with haste can negate Enchant's slow: Weaver, Dark Seer, 
Lycan, 
Centaur Warrunner.
Kunkka
* Heroes that can keep Marci for a long time in one place so she can't pursue her targets, like 
Bane, 
Lion, 
Shadow Shaman, 
Invoker, Disruptor and Kunkka.
Dark Seer
* With Normal Punch from Aghanim's Scepter, Dark Seer can gain an advantage against heroes who rely on evasion as Normal Punch has true strike: Phantom Assassin, Windranger, Hoodwink.
Dark Seer
* Certain heroes can mess up with Pangolier's positioning and timing (especially if he intends to use Rolling Thunder during combat): 
Vengeful Spirit, 
Keeper of the Light, 
Huskar, Dark Seer
Kunkka
* Kunkka's Ghostship and Torrent disrupt fights in Arena Of Blood.
Kunkka
* In general, highly mobile heroes like Earth Spirit or Storm Spirit are at a disadvantage against X Marks the Spot.
* Similarly, heroes with low cooldown teleports can be afraid to split push against X Marks the Spot, such as Tinker and Nature's Prophet.
Dark Seer
* Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: Beastmaster, Broodmother, Enigma, Nature's Prophet, Visage, Warlock, Wraith King.
Kunkka
* In general, highly mobile heroes like Earth Spirit or Storm Spirit are at a disadvantage against X Marks the Spot.
* Similarly, heroes with low cooldown teleports can be afraid to split push against X Marks the Spot, such as Tinker and Nature's Prophet.
Dark Seer
* Dark Seer can increase the movement speed of allies with Surge, breaking Static Link.
Kunkka
* Lion lacks mobility or escape mechanisms, making him an easy target for abilities like 
Mirana's 
Sacred Arrow or 
Leshrac's 
Split Earth, or combos like Kunkka's X Marks the Spot into Torrent.
Kunkka
* Heroes that punish mobile heroes: Bloodseeker, Keeper of the Light, Kunkka, Disruptor.
Dark Seer
* The haste provided by Dark Seer's Surge or a {Rune:Haste} renders Lich's slows ineffective.
Kunkka
* Heroes who are strong against mobile heroes: Disruptor, Bloodseeker, Kunkka, Keeper of the Light.
Dark Seer
* Heroes with hastes: Dark Seer, Lycan
Dark Seer
* Heroes who rely on damage over time as Spiked Carapace can block and reflect only one instance of damage: Jakiro, 
Viper, Venomancer, Huskar, Ember Spirit, Dark Seer, Sand King, Doom, Dawnbreaker. However, this also means they are easily stunned.
Kunkka
* Heroes with long channeling abilities like 
Witch Doctor are easy targets for Kunkka to interrupt in team fights.
Additional:
* Torrent can cancel Death Ward from a far distance.
Kunkka
* 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.
Kunkka
* Heroes with long range abilities are also able to touch Zeus, such as 
Clockwerk, Kunkka, Puck, 
Skywrath Mage, Spirit Breaker, 
Tusk and others.
Dark Seer
* Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: Beastmaster, Broodmother, Enigma, Nature's Prophet, Visage, Warlock, Wraith King.
Dark Seer
* Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: Beastmaster, Broodmother, Enigma, Nature's Prophet, Visage, Warlock, Wraith King.
Kunkka
* Similarly, heroes with low cooldown teleports can be afraid to split push against X Marks the Spot, such as Tinker and Nature's Prophet.
* In general, highly mobile heroes like Earth Spirit or Storm Spirit are at a disadvantage against X Marks the Spot.
* Similarly, heroes with low cooldown teleports can be afraid to split push against X Marks the Spot, such as Tinker and Nature's Prophet.
Additional:
* X Marks the Spot can be used to prevent Tinker from escape with 
Blink Dagger or 
Keen Conveyance, discourage him from snapping farm and snapping gank. However, in later game, it'll be much more difficult because Tinker can buy Black King Bar or 
Linken's Sphere to prevent Kunkka from placing X on him, or Eul's Scepter of Divinity to prevent the recall.
Kunkka
* Treant Protector's 
Living Armor will also negate Tidebringer's damage.
Dark Seer
* Living Armor can be destroyed quickly with Ion Shell.
Dark Seer
* Dark Seer's only disable is Vacuum. Though he starts off with high armor and health, he'll eventually have a hard time dealing with high mobility heroes such as Weaver or Queen of Pain.
Kunkka
* Ghostship helps your team soak up damage from Sonic Wave and 
Scream of Pain.
* Queen of Pain can't escape easily from X Marks the Spot - Torrent combo.
* Outlanes Queen of Pain on the midline, due to the fact that Queen of Pain has a small reserve of health at the beginning of the game, and she suffers very much from Tidebringer, which is why she is forced to either spend money on Tango, or skip creeps and run for bounty runes, and Kunkka at this time will gain an advantage in level and gold.
Additional:
* Outlanes Queen of Pain on the midline, due to the fact that Queen of Pain has a small reserve of health at the beginning of the game, and she suffers very much from Tidebringer, which is why she is forced to either spend money on Tango, or skip creeps and run for bounty runes, and Kunkka at this time will gain an advantage in level and gold.
* Kunkka will catch her in X Marks the Spot and allow his team to kill her for stun from Torrent, because Queen of Pain has no way to avoid the cross X Marks the Spot before buying Black King Bar.
Kunkka
* Melee heroes with low mobility can be kited and killed by Viper: Treant Protector, Kunkka, Alchemist, 
Troll Warlord, Wraith King, Tiny, Sven.
Dark Seer
* Heroes who do not have nor rely on passive abilities make Nethertoxin much less effective: 
Clinkz, Pugna, Nature's Prophet, Dark Seer, Lycan, Tusk
Dark Seer
* Dark Seer relies on Surge for most of his mobility, so he's not very vulnerable to slows, but much more to root effects and walls or pseudo-walls such as Disruptor's 
Kinetic Field or Slark's 
Pounce.
Dark Seer
* Heroes with AoE abilities will hit Slark in Shadow Dance: Lina, Jakiro, Underlord, Leshrac, Dark Seer, Earthshaker, 
Timbersaw, Crystal Maiden.
Dark Seer
* 
Flame Guard makes Dark Seer not deal any damage with his skills to Ember Spirit.
Kunkka
* Using X Marks the spot Kunkka can prevent Ember Spirit from escaping with Activate Fire Remnant, until he purchase Eul's Scepter of Divinity or Linken's Sphere.
Dark Seer
* Dark Seer relies on Surge for most of his mobility, so he's not very vulnerable to slows, but much more to root effects and walls or pseudo-walls such as Disruptor's Kinetic Field or Slark's Pounce.
Kunkka
* X Marks the Spot is a counter to Disruptor's 
Glimpse, but you need quick reactions to pull it off.
Kunkka
* Rubick can steal abilities from Kunkka (except Tidebringer) with
Spell Steal. Since build Aghanim's Scepter, Rubick's make two steal abilities from Kunkka when the spot is right.
Kunkka is a strong teamfighter with his powerful control spells, which Rubick could exploit to his advantage.
Torrent provides another source of damage and crowd control.
Ghostship is a powerful teamfight spell, providing huge magical damage to enemies and buffing allies with damage negation.
Duel or 
Beserker's Call. 
Telekinesis can reposition an enemy onto a 
Torrent or 
Ghostship.
Torrent Storm works as a disruptive spell for Rubick to create chaos around him.
Tidal Wave offers another source of control and repositioning.
Kunkka gains these spells with 
Aghanim's Shard and 
Aghanim's Scepter, 
Rubick does not need extra items to steal these spells.
X Marks the Spot serves as a utility spell for escaping, chasing and other useful functions.
Additional:
*
*
*
* Both skills works the best when comboed with other source of control from allies, such as
*
*
*
* As long as
*
Dark Seer
*
Spell Steal will easily steal all abilities from Dark Seer.
Spell Steal can perfect from Rubick's steal all abilities from Dark Seer. Rubick's always purchase 
Aghanim's Scepter can two stolens abilities from Dark Seer's and waiting for seconds for second stolen abilities (example: combinated Vacuum and Wall of Replica) and many different combination. 
Spell Steal waiting steal abilities from Dark Seer 
Wall of Replica and illusion from 
Wall of Replica Dark Seer's can fighting with effect from outcome steal 
Wall of Replica from Rubick's.
Surge and 
Blink Dagger is very important catch from Dark Seer's and enemies.
Telekinesis can lifted up Dark Seer or enemy heroes and throw to 
Wall of Replica from Rubick's steal.
Additional:
*
* A good positoning from Rubick's
* Combinated Rubick's steal
* Rubick's