Huskar
[wiki] rating: 1.2 (winrate: 53% pickrate: 6%)Ursa
[wiki] rating: 1.0 (winrate: 52% pickrate: 15%)Dragon Knight
* 
Fury swipes can tear Dragon knight down as it stacks infinitely.
Razor
[wiki] rating: 1.0 (winrate: 52% pickrate: 7%)Dragon Knight
* 
Static Link saps Dragon Knight of his already low base damage, making him even more useless in a fight if he gets kited.
* 
Storm Surge makes Razor much faster than Dragon Knight, and hard to catch.
* 
Eye of the Storm melts Dragon Knight's armor and bypasses 
Black King Bar, his core item.
Drow Ranger
[wiki] rating: 1.0 (winrate: 51% pickrate: 18%)Dragon Knight
* Dragon Knight has no built-in disengage from 
Frost Arrows, and 
Marksmanship procs ignore base armor, bypassing Dragon Knight’s durability for the most part, making Drow one of the few heroes that can deal enough sustained damage to solo kill Dragon Knight.
* With 
Aghanim's Shard, Frost Arrows also apply hypothermia stacks, reducing her target’s regen, which is especially potent against tanks like Dragon Knight. (A similar effect can also be achieved with an 
Eye of Skadi)
Outworld Destroyer
[wiki] rating: 1.0 (winrate: 51% pickrate: 10%)Dragon Knight
* 
Arcane Orb's constant pure damage output is devastating to Dragon Knight.
* Dragon Knight's relatively low mana pool leads to heavy damage from 
Sanity's Eclipse, which also bypasses his armor.
Lich
[wiki] rating: 1.0 (winrate: 51% pickrate: 9%)Dragon Knight
* Lich's constant slows with 
Frost Blast and 
Chain Frost will slow Dragon Knight to a crawl, especially in a crowded teamfight.
Timbersaw
[wiki] rating: 1.0 (winrate: 46% pickrate: 5%)Dragon Knight
* Timbersaw's pure damage will kill Dragon Knight surprisingly fast, especially if he gets caught in a bad position while laning.
Bristleback
[wiki] rating: 1.0 (winrate: 43% pickrate: 1%)Dragon Knight
* 
Viscous Nasal Goo slows down Dragon Knight and lowers armor, locking him down and making him more vulnerable.
Meepo
[wiki] rating: 0.6 (winrate: 56% pickrate: 1%)Keeper of the Light
* Heroes that can jump and kill him: 
Meepo, 
Clinkz, 
Templar Assassin
Omniknight
[wiki] rating: 0.6 (winrate: 55% pickrate: 3%)Dragon Knight
* 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
Dark Seer
[wiki] rating: 0.6 (winrate: 52% pickrate: 2%)Keeper of the Light
* Heroes with hastes: 
Dark Seer, Lycan
Oracle
[wiki] rating: 0.6 (winrate: 51% pickrate: 4%)Keeper of the Light
* Heroes with dispels: 
Legion Commander, 
Oracle, 
Slark, 
Phantom Lancer
Underlord
[wiki] rating: 0.6 (winrate: 51% pickrate: 3%)Dragon Knight
* 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.
Jakiro
[wiki] rating: 0.6 (winrate: 51% pickrate: 12%)Keeper of the Light
* Jakiro's reliance on his abilities can cause struggles for heroes who rely on evasion or blinds to get upper hand: Phantom Assassin, 
Windranger, 
Riki, Troll Warlord, 
Keeper of the Light.
Venomancer
[wiki] rating: 0.6 (winrate: 50% pickrate: 4%)Dragon Knight
* In general, heroes that can slow down Dragon Knight's movement speed will do well against him. This includes 
Venomancer and others in addition to the heroes mentioned above.
Gyrocopter
[wiki] rating: 0.6 (winrate: 50% pickrate: 7%)Dragon Knight
* Heroes that relies on armor or other type of physical damage negation are easy for Gyrocopter to take down during the early game with his magical damage: 
Axe, Dragon Knight, 
Sven.
Slardar
[wiki] rating: 0.6 (winrate: 50% pickrate: 4%)Dragon Knight
* 
Slardar can chase Dragon Knight down with 
Guardian Sprint and stun him with both 
Slithereen Crush and his passive 
Bash of the Deep. He can also use 
Corrosive Haze to whittle Dragon Knight's armor.
Elder Titan
[wiki] rating: 0.6 (winrate: 50% pickrate: 1%)Dragon Knight
* 
Elder Titan's 
Natural Order completely nullifies Dragon Knight's high armor.
Ancient Apparition
[wiki] rating: 0.6 (winrate: 50% pickrate: 5%)Dragon Knight
* Heroes that withstand damage like 
Timbersaw, 
Bristleback, Dragon Knight and others will have their durability largely reduced when hit by an Ice Blast due to the risk of shattering.
Additional:
* 
Cold Feet and 
Ice Vortex both hinder Dragon Knight's movement greatly during teamfights.
* 
Ice Blast ignores Dragon Knight's armor, disables his health regeneration, and kills him prematurely.
Sand King
[wiki] rating: 0.6 (winrate: 50% pickrate: 6%)Dragon Knight
* Heroes with no mobility will take some good damage from Sand King's spells: Dragon Knight, 
Jakiro, 
Pugna, 
Earthshaker,...
Primal Beast
[wiki] rating: 0.6 (winrate: 49% pickrate: 9%)Keeper of the Light
* Any hero who lanes very poorly will struggle with Primal Beast's potential snowball in the very early levels, like Keeper of the Light, 
Luna, Templar Assassin...
Crystal Maiden
[wiki] rating: 0.6 (winrate: 49% pickrate: 13%)Keeper of the Light
* Heroes with channeling abilities: 
Enigma, 
Witch Doctor, 
Crystal Maiden.
Storm Spirit
[wiki] rating: 0.6 (winrate: 49% pickrate: 6%)Keeper of the Light
* Heroes with teleports to escape Solar Blind and Will-O-Wisp: Phantom Assassin, 
Puck, 
Queen of Pain, 
Storm Spirit
Puck
[wiki] rating: 0.6 (winrate: 48% pickrate: 9%)Keeper of the Light
* Heroes with silences: Puck, 
Doom, Riki.
Tiny
[wiki] rating: 0.6 (winrate: 48% pickrate: 13%)Keeper of the Light
* Squishy heroes, usually supports, like 
Lion, 
Ancient Apparition, Keeper of the Light etc can die quickly to Tiny's magic burst.
Hoodwink
[wiki] rating: 0.6 (winrate: 47% pickrate: 13%)Dragon Knight
* Durable heroes relied a lot on their main passive effects and items' effects such as Bristleback, 
Underlord, 
Spectre and Dragon Knight can be disabled easily with 
Sharpshooter's break, reducing their potential in teamfights.
Shadow Demon
[wiki] rating: 0.6 (winrate: 47% pickrate: 1%)Dragon Knight
* Heroes that lose a great amount of their tankiness and become easier to finish off: Bristleback, Spectre, Phantom Assassin, 
Enchantress, Dragon Knight.
* Once you have an Aghanim's Scepter, Shadow Demon instantly reaches a new power spike and becomes a counter for a variety of heroes that have strong passives.
* Heroes that lose a great amount of their tankiness and become easier to finish off: Bristleback, Spectre, Phantom Assassin, Enchantress, Dragon Knight.
* Heroes that lose a great amount of damage output and become less threatening: Phantom Assassin, Sven, Slark, Phantom Lancer.
* You can always stack camps and farm the scepter with Shadow Poison.
Doom
[wiki] rating: 0.6 (winrate: 47% pickrate: 8%)Keeper of the Light
* Heroes with silences: Puck, Doom, Riki.
Queen of Pain
[wiki] rating: 0.6 (winrate: 46% pickrate: 6%)Keeper of the Light
* Heroes with teleports to escape Solar Blind and Will-O-Wisp: Phantom Assassin, Puck, Queen of Pain, Storm Spirit
Lion
[wiki] rating: 0.6 (winrate: 45% pickrate: 10%)Keeper of the Light
* Mana Drain is very effective against heroes that have mana burn abilities such as 
Anti-Mage, 
Nyx Assassin and Keeper of the Light.
Anti-Mage
[wiki] rating: 0.4 (winrate: 53% pickrate: 11%)Keeper of the Light
* Being an intelligence caster hero, Ezalor usually has a high mana pool and low health and armor, making him a prime target for 
Mana Void
* Ezalor's Illuminate damage and Solar Bind's magic resistance reduction are greatly reduced thanks to 
Counterspell. Counterspell can also block and reflect Solar Bind if timed properly.
* Anti-Mage usually is not hampered by Solar Bind or Will-O-Wisp thanks to 
Blink.
* However, despite all of this, if Keeper of the Light is played carefully and tops off his team's mana at all times, Anti Mage will not be able to get off a good Mana Void.
* By the same token once Keeper of the Light gets a 
Octarine Core, he can spam Charka Magic to keep his own mana full
Keeper of the Light
* Keeper of the Light can stall pushes with 
Illuminate. This makes him strong against pushing heroes: Terrorblade 
Naga siren 
Nature's Prophet and Anti-Mage
Night Stalker
[wiki] rating: 0.4 (winrate: 52% pickrate: 4%)Keeper of the Light
* 
Crippling Fear prevents Keeper of the Light from using his spells to keep his team alive during team-fights.
* 
Dark Ascension is very strong against Keeper of the Light, as it allows Night Stalker to jump the backline and quickly kill the squishy Ezalor, especially when combined with the slow from 
Void.
Additional:
* Keeper of the Light's Aghanim's Scepter upgrade loses much of its power, due to Night Stalker being able to reduce the duration of daytime by a lot.
Dragon Knight
* Heroes that are hard to gank: Dragon Knight, 
Mars, 
Centaur Warrunner.
Legion Commander
[wiki] rating: 0.4 (winrate: 51% pickrate: 13%)Keeper of the Light
* 
Press the Attack can dispel Blinding Light or Solar Bind from a hero.
* 
Duel can be used to instantly take Keeper of the Light out of a team-fight.
Keeper of the Light
* Heroes with abilities that blind or cause Legion Commander to miss will prevent her from winning Duels: 
Arc Warden, Keeper of the Light, Riki, 
Tinker
Necrophos
[wiki] rating: 0.4 (winrate: 50% pickrate: 7%)Dragon Knight
* 
Heartstopper Aura and 
Reaper's Scythe go right through Dragon Knight's armor.
Dragon Knight
* Enemies that possess high defenses through magic resistance, damage reduction, or high regeneration will make it difficult to whittle their health down to get to Reaper's Scythe's threshold. Such heroes include Bristleback (although only from behind), Spectre, Ursa, and Dragon Knight.
Viper
[wiki] rating: 0.4 (winrate: 49% pickrate: 4%)Dragon Knight
* 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.
Keeper of the Light
* Heroes with extremely slow movement speed will cripple against Solar Bind: 
Medusa, 
Viper
Bloodseeker
[wiki] rating: 0.4 (winrate: 49% pickrate: 3%)Keeper of the Light
* 
Blood Rite makes Ezalor chose between getting off Illuminate or getting silenced for a while, as Illuminate is a channeled ability.
* Blood Rite's silence can completely take Ezalor out of a teamfight, as he relies on his abilities to be useful.
* Keeper of the Light's only mobility source, his high movement speed (via his high base movement speed and through spirit form), is entirely countered by 
Rupture.
Dragon Knight
* Heroes with high armor and durability can be exceptionally hard for Bloodseeker to bring down: Dragon Knight, Axe
Additional:
* Bloodseeker's physical damage is unlikely to kill Dragon Knight, and therefore rarely get a chance to recover the large amount of HP from 
Bloodrage.
Lifestealer
[wiki] rating: 0.4 (winrate: 49% pickrate: 5%)Keeper of the Light
* 
Rage allows him to be immune to all of Ezalor's abilities. Also, the increased movement speed combined with the slow from 
Ghoul Frenzy and the squishy nature of Ezalor allows Lifestealer to take him down very quickly.
Dragon Knight
* Heroes that rely on physical damage are ineffective against Dragon Knight due to his high armor: Phantom Assassin,
Bloodseeker, 
Lifestealer, Troll Warlord, Sven
Broodmother
[wiki] rating: -2.0 (winrate: 54% pickrate: 3%)Dragon Knight
* Breathe Fire will clear Broodmother's spiderites while significantly damaging her spiderlings and decreasing their damage output.
* Dragon Blood's added armor and regen mitigates the damage done by Broodmother and her spiders.
* Elder Dragon Form at level 2 and above applies splash damage to Dragon Knight's auto attacks.
Keeper of the Light
* Illuminate wipes out Broodmother's spiders and prevents her from pushing the lane. It also gives vision to reveal where broodmother is hiding in the trees.
Spirit Breaker
[wiki] rating: -1.6 (winrate: 48% pickrate: 9%)Dragon Knight
* Spirit Breaker's slow attack speed and moderate damage do very little to harm Dragon Knight, even if ganked with 
Charge of Darkness.
Keeper of the Light
* Heroes that punish mobile heroes: Bloodseeker, Keeper of the Light
Sven
[wiki] rating: -1.2 (winrate: 48% pickrate: 2%)Dragon Knight
* Heroes that rely on physical damage are ineffective against Dragon Knight due to his high armor: Phantom Assassin,Bloodseeker, Lifestealer, Troll Warlord, Sven
Keeper of the Light
* Melee carries during the laning phase: Sven, Slark
Magnus
[wiki] rating: -1.2 (winrate: 51% pickrate: 15%)Dragon Knight
* Any hero who can survive Magnus's initiations and manfight him: 
Huskar, 
Faceless Void, 
Weaver, 
Abaddon, Troll Warlord, 
Alchemist, Dragon Knight, 
Night Stalker, Viper.
Keeper of the Light
* 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.
Naga Siren
[wiki] rating: -1.2 (winrate: 51% pickrate: 3%)Dragon Knight
* Cleave heroes will clear her illusions. Such heroes include Sven, 
Magnus, Dragon Knight in Elder Dragon Form, 
Ember Spirit (via item), Phantom Assassin (via talent or item), etc.
Keeper of the Light
* Keeper of the Light can stall pushes with Illuminate. This makes him strong against pushing heroes: Terrorblade Naga siren Nature's Prophet and Anti-Mage
Chen
[wiki] rating: -1.2 (winrate: 51% pickrate: 0%)Dragon Knight
* 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.
Keeper of the Light
* Heroes with summons/illusions/neutral creep armies: 
Beastmaster, 
Chen, Naga Siren
Monkey King
[wiki] rating: -1.0 (winrate: 47% pickrate: 8%)Keeper of the Light
* Blinding Light can knock Monkey King outside of his ultimate, Wukong's Command and can blind him.
* Will-O-Wisp will stun Monkey King from Tree Dance by destroying his tree.
Additional:
* 
Blinding Light can easily push Monkey King out of Wukong's Command, as well as blinding him.
* Monkey King is vulnerable to burst damage, 
Solar Bind makes him more so
* However, Keeper of the Light can be easily ganked by Monkey King during early-mid game stage.
Chaos Knight
[wiki] rating: -1.0 (winrate: 47% pickrate: 3%)Dragon Knight
* Dragon Blood's armor bonus greatly reduces the damage dealt by Phantasm.
* Breathe Fire and Elder Dragon Form's splash damage quickly destroy illusions and reduces their damage output.
Shadow Shaman
[wiki] rating: -1.0 (winrate: 49% pickrate: 6%)Dragon Knight
* Dragon Knight can simply tank and destroy all Shadow Shaman's Serpent Wards.
Beastmaster
[wiki] rating: -1.0 (winrate: 51% pickrate: 2%)Keeper of the Light
* Illuminate clears Beastmaster's summons and is effective against his push.
Terrorblade
[wiki] rating: -0.6 (winrate: 45% pickrate: 2%)Keeper of the Light
* Keeper of the Light can stall pushes with Illuminate. This makes him strong against pushing heroes: Terrorblade Naga siren Nature's Prophet and Anti-Mage
Medusa
[wiki] rating: -0.6 (winrate: 45% pickrate: 1%)Keeper of the Light
* Heroes with extremely slow movement speed will cripple against Solar Bind: Medusa, Viper
Additional:
* 
Will-O-Wisp will keep Medusa busy after she got hit by Blinding Light.
Phantom Assassin
[wiki] rating: -0.6 (winrate: 46% pickrate: 10%)Keeper of the Light
* Heroes with teleports to escape Solar Blind and Will-O-Wisp: Phantom Assassin, Puck, Queen of Pain, Storm Spirit
Dragon Knight
* Heroes that rely on physical damage are ineffective against Dragon Knight due to his high armor: Phantom Assassin,Bloodseeker, Lifestealer, Troll Warlord, Sven
Keeper of the Light
* Heroes which rely exclusively on right clicks will struggle somewhat against Blinding Light: Phantom Assassin, Wraith King, Medusa
Nature's Prophet
[wiki] rating: -0.6 (winrate: 46% pickrate: 12%)Keeper of the Light
* Keeper of the Light can stall pushes with Illuminate. This makes him strong against pushing heroes: Terrorblade Naga siren Nature's Prophet and Anti-Mage
Faceless Void
[wiki] rating: -0.6 (winrate: 48% pickrate: 9%)Keeper of the Light
* Any hero that can nullify effects of Chronosphere: (Keeper of the Light with Aghanim's Scepter during daytime, 
Winter Wyvern), banishing him or Faceless Void (
Outworld Destroyer, 
Shadow Demon, 
Earth Spirit with Aghanim's Scepter) or protecting him in other ways (
Dazzle, Oracle, Abaddon) can greatly limit Chronosphere's potential.
Marci
[wiki] rating: -0.6 (winrate: 48% pickrate: 7%)Dragon Knight
* Heroes that reduce the damage that Marci can deal during her ultimate, like Razor, Rubick, 
Bane, Dragon Knight and Underlord.
Void Spirit
[wiki] rating: -0.6 (winrate: 48% pickrate: 5%)Dragon Knight
* Heroes who can match Void Spirit's mobility (like the aforementioned Ember Spirit or Queen of Pain) or tank his spells (Dragon Knight or Centaur Warrunner) are very problematic for him.
Wraith King
[wiki] rating: -0.6 (winrate: 48% pickrate: 4%)Keeper of the Light
* Heroes which rely exclusively on right clicks will struggle somewhat against Blinding Light: Phantom Assassin, Wraith King, Medusa
Tusk
[wiki] rating: -0.6 (winrate: 49% pickrate: 15%)Dragon Knight
* Durable heroes can stand against Tusk during 1v1: Axe, Dragon Knight, Night Stalker, Centaur Warrunner, Wraith King and more.
Troll Warlord
[wiki] rating: -0.6 (winrate: 50% pickrate: 2%)Dragon Knight
* Heroes that rely on physical damage are ineffective against Dragon Knight due to his high armor: Phantom Assassin,Bloodseeker, Lifestealer, Troll Warlord, Sven
Lycan
[wiki] rating: -0.6 (winrate: 57% pickrate: 3%)Keeper of the Light
* Heroes with hastes: Dark Seer, Lycan
Dragon Knight
* Dragon Knight's insanely high armor and splash damage can cause Lycan to struggle taking him down.
Keeper of the Light
* Keeper of the Light has a blind, which causes Lycan to miss his attacks.
Templar Assassin
[wiki] rating: -0.4 (winrate: 48% pickrate: 4%)Keeper of the Light
* Heroes that can jump and kill him: Meepo, Clinkz, Templar Assassin
Dragon Knight
* Despite the armor reduction from 
Meld, Templar Assassin's reliance on physical damage and medium attack speed is unlikely to harm Dragon Knight.
* Templar Assassin's Refraction charges also get quickly removed by the damage over time from Dragon Knight's ultimate.
Additional:
* The damage over time from Dragon Knight's Elder Dragon Form rapidly burns down Refraction, allowing him to attack her.
* Also, Breathe Fire reduces Templar Assassin's damage and 
Dragon Tail is a stun with a considerable duration, letting him and his team whittle her health down once her defenses wear off.
* Templar Assassin will struggle to kill Dragon Knight thanks to his high armor and health regen from Dragon Blood as she deals entirely physical damage.
Shadow Fiend
[wiki] rating: -0.4 (winrate: 48% pickrate: 18%)Dragon Knight
* Shadow Fiend's 
Presence of the Dark Lord reduces Dragon Knight's armor considerably, and his strong base attacks are augmented by his 
Necromastery.
Dragon Knight
* Dragon Tail can be used to cancel Requiem of Souls.
* 
Breathe Fire reduces Shadow Fiend's damage even further.
* Dragon Knight's high strength and Dragon Blood means that he'll be able to tank Shadow Fiend's right clicks.
Witch Doctor
[wiki] rating: -0.4 (winrate: 48% pickrate: 15%)Keeper of the Light
* Heroes with channeling abilities: Enigma, Witch Doctor, Crystal Maiden.
Dragon Knight
* 
Death Ward does little damage against Dragon Knight's armor, and Dragon Knight's high health regeneration minimizes damage from 
Maledict.
Enigma
[wiki] rating: -0.4 (winrate: 50% pickrate: 3%)Keeper of the Light
* Heroes with channeling abilities: Enigma, Witch Doctor, Crystal Maiden.
Keeper of the Light
* Illuminate can wipe the pushing Eidolons in a lane with ease, diminishing Enigma's laning presence by a lot.
* However, Keeper of the Light does not have any way to cancel Black Hole outside from Will-O-Wisp from Aghanim's Scepter.
Phantom Lancer
[wiki] rating: -0.4 (winrate: 50% pickrate: 2%)Keeper of the Light
* Heroes with dispels: Legion Commander, Oracle, Slark, Phantom Lancer
Dragon Knight
* The dragon's splash damage wears down his illusions.
* Early harassment with Breath of Fire hinders his farming.
* Fireball stops his pushes and allows for a defence.
Additional:
* Breathe Fire and Elder Dragon Form's splash damage takes out Phantom Lancer's illusions quickly.
* If Dragon Knight can Dragon Tail the real Phantom Lancer, he and his team can quickly kill him before he has a chance to escape.
Riki
[wiki] rating: -0.4 (winrate: 54% pickrate: 13%)Keeper of the Light
* Heroes with silences: Puck, Doom, Riki.
Dragon Knight
* Riki does little damage to Dragon Knight, as he relies only on physical damage with modest attack speed and lack of burst.
Juggernaut
[wiki] rating: -0.2 (winrate: 50% pickrate: 11%)Keeper of the Light
* Juggernaut's 
Healing Ward keeps his team healthy even when pushing against Keeper of the Light's Illuminate.
* Blade Fury can dispel Blinding Light, as well as dodge an incoming Illuminate. Juggernaut can attack towers during Blade Fury, so he can dodge an Illuminate without having to stop pushing.
* Should Keeper of the Light obtain Will-o-Wisp through purchasing an Aghanim's Scepter, Juggernaut can make quick work of Ignis Fatuus without being interrupted by its pull.
* Keeper of the Light has low health, low armor, and no natural defense against 
Blade Fury.
Additional:
* Blade Fury allows him to be immune to all of Ezalor's abilities.
* Healing Ward heals his entire team, mitigating Ezalor's weak magical burst damage.
Dragon Knight
* Heroes with high armor and/or durability can handle Juggernaut's ultimate, such as Sven and Dragon Knight.
Keeper of the Light
* Keeper of the Light's Blinding Light makes Juggernaut miss his attacks. However, it can be dispelled easily with Blade Fury.
Pangolier
[wiki] rating: 0.0 (winrate: 48% pickrate: 9%)Dragon Knight
* Heroes who rely on skills to become a heavy hitter in a certain amount of time can waste their timing because of a lucky Lucky Shot's disarm: Terrorblade, Sven, Clinkz, Windranger, Alchemist, Dragon Knight, Legion Commander
Keeper of the Light
* 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
Nyx Assassin
[wiki] rating: 0.0 (winrate: 50% pickrate: 4%)Keeper of the Light
* 
Spiked Carapace can be used to reflect Illuminate damage and stun Keeper of the Light.
* 
Vendetta allows Nyx Assassin to follow Keeper of the Light around if he tries to split-push.
* Keeper of the Light is very squishy and will very quickly die to Vendetta and it's followup abilities.
* However, 
Mana Burn's Mana Burn can be more or less mitigated with Chakra Magic.
Dragon Knight
* Dragon Knight's heavy armor negates Vendetta's burst physical damage. His large HP pool also gives him a good chance of surviving Nyx Assassin's follow-up nuke damage.
Slark
[wiki] rating: 0.0 (winrate: 51% pickrate: 17%)Keeper of the Light
* Heroes with dispels: Legion Commander, Oracle, Slark, Phantom Lancer
Keeper of the Light
* Melee carries during the laning phase: Sven, Slark
Clinkz
[wiki] rating: 0.0 (winrate: 52% pickrate: 7%)Keeper of the Light
* With 
Bloodthorn, Clinkz becomes a strong counter to heroes who rely on evasion and blind such as Windranger, Phantom Assassin, Troll Warlord and Keeper of the Light.
Dragon Knight
* Heroes with high armor like Dragon Knight, or with abilities to cause attacks to miss like Phantom Assassin, Riki and Tinker will be hard to deal with, as Clinkz relies almost entirely on physical attacks.
Additional:
* The extra damage from 
Searing Arrows is largely blocked by Dragon Knight's armor.
* Clinkz has too low health to survive a gank.Getting stunned keeps him down long enough for a reaction.
* Breathe Fire reduces his damage,as it is physical.
Silencer
[wiki] rating: 0.0 (winrate: 52% pickrate: 15%)Keeper of the Light
* Being a cast-oriented hero, Ezalor will suffer from all of Silencer's abilities.
* 
Global Silence is a guaranteed lengthy silence which will render Ezalor useless in a teamfight.
* 
Arcane Curse and 
Last Word are good against any caster, since they are extremely potent.
* However, it should be worth mentioning that a smart Ezalor will buy Eul's Scepter of Divinity to dispel Silencer's abilities. Combined with the level 20 talent (Chakra Magic applies a basic dispel), Ezalor can purge Silencer's abilities off allies and himself alike.
Dragon Knight
* If Silencer can't prevent Dragon Knight from using Elder Dragon Form, Silencer's spells aren't going to be that effective against him, as Dragon Knight relies on right-clicks and not spells.
* Dragon Blood's armor bonus and health regeneration allows Dragon Knight to stay in the lane against Glaives of Wisdom.
* Dragon Knight often builds Black King Bar, allowing him to remove Global Silence before engaging.
Dragon Knight
*
Huskar can burn down Dragon Knight's health quickly during the early to mid game, but is not as effective during the late game. However, 
Life Break remains a constant threat due to the slow and percentage-based damage.
Additional:
* Huskar can negate Dragon Knight's passive with multiple trades of Burning Spear.
Keeper of the Light
* Vulnerable spellcasters with no escape mechanisms are easy targets for Huskar:
Lich, 
Crystal Maiden, 
Silencer, 
Keeper of the Light, 
Venomancer, etc.