Lifestealer
[wiki] rating: 2.0 (winrate: 49% pickrate: 5%)Templar Assassin
[wiki] rating: 1.6 (winrate: 48% pickrate: 4%)Keeper of the Light
* Heroes that can jump and kill him: 
Meepo, 
Clinkz, 
Templar Assassin
Centaur Warrunner
* Centaur has nothing to deal with 
Refraction that will negate all of his burst damage.
* 
Psionic Traps provide good vision, making for him harder to initiate.
Undying
[wiki] rating: 1.0 (winrate: 52% pickrate: 10%)Centaur Warrunner
* Decay can be good against Centaur Warrunner, as reducing the health of Centaur can make 
Double Edge risky.
* His zombies do not proc 
Retaliate, as it only procs for regular attacks.
Silencer
[wiki] rating: 1.0 (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.
Necrophos
[wiki] rating: 1.0 (winrate: 50% pickrate: 7%)Centaur Warrunner
* With high health and rarely buying 
Linken's Sphere or 
Black King Bar, Centaur Warrunner is a good target for 
Reaper's Scythe. However, Centaur Warrunner can resolve this problem by buying 
Hood of Defiance and it's upgrade 
Pipe of Insight to diminish its damage.
* 
Heartstopper Aura will do well against high health heroes such as Centaur Warrunner.
Luna
[wiki] rating: 1.0 (winrate: 49% pickrate: 2%)Centaur Warrunner
* Luna's 
Moon Glaives will not trigger Retaliate if they hit some other target first. Also Luna commonly buys items that provide lifesteal such as 
Satanic, which lets her heal from the damage of Retaliate, meaning that Retaliate has little effect against her.
* 
Eclipse can be used to counter-initiate against Centaur Warrunner after he jumps in with 
Blink Dagger, and initiates with 
Hoof Stomp. But remember that Centaur Warrunner can resolve this problem by buying Hood of Defiance and it's upgrade Pipe of Insight to diminish its damage. Or 
Blade Mail to reflect the damage of the Eclipse back at Luna.
* Luna also commonly buys Black King Bar, which will allow her to protect herself from both, Centaur Warrunner's abilities (except for the Retaliate), and damage reflect from Blade Mail.
Additional:
* Luna's Moon Glaives will not trigger Retaliate if they hit some other target first. Also Luna commonly buys items that provide lifesteal such as Satanic, which lets her heal from the damage of Retaliate, meaning that Retaliate has little effect against her.
* Eclipse can be used to counter-initiate against Centaur Warrunner after he jumps in with Blink Dagger, and initiates with Hoof Stomp. But remember that Centaur Warrunner can resolve this problem by buying Hood of Defiance and it's upgrade Pipe of Insight to diminish its damage. Or Blade Mail to reflect the damage of the Eclipse back at Luna.
* Luna also commonly buys Black King Bar, which will allow her to protect herself from both, Centaur Warrunner's abilities (except for the Retaliate), and damage reflect from Blade Mail.
Clockwerk
[wiki] rating: 1.0 (winrate: 49% pickrate: 8%)Centaur Warrunner
* 
Battery Assault easily interrupts Centaur Warrunner due to his poor cast animation.
* 
Power Cogs can negate Stampede.
Bloodseeker
[wiki] rating: 1.0 (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.
Disruptor
[wiki] rating: 1.0 (winrate: 48% pickrate: 10%)Centaur Warrunner
* 
Kinetic Field and 
Glimpse can completely negate Stampede.
Kunkka
[wiki] rating: 1.0 (winrate: 47% pickrate: 3%)Centaur Warrunner
* 
X Marks the Spot negates Stampede.
Meepo
[wiki] rating: 0.6 (winrate: 56% pickrate: 1%)Keeper of the Light
* Heroes that can jump and kill him: Meepo, Clinkz, Templar Assassin
Riki
[wiki] rating: 0.6 (winrate: 54% pickrate: 13%)Keeper of the Light
* Heroes with silences: 
Puck, 
Doom, 
Riki.
Huskar
[wiki] rating: 0.6 (winrate: 53% pickrate: 6%)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.
Clinkz
[wiki] rating: 0.6 (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.
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
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.
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
Winter Wyvern
[wiki] rating: 0.6 (winrate: 48% pickrate: 3%)Centaur Warrunner
* 
Winter Wyvern's 
Arctic Burn can also be a useful tool against Centaur, who generally has very high health. 
Winter's Curse on Centaur can cause Retaliate to damage allies who are forced to attack him.
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.
Witch Doctor
[wiki] rating: 0.6 (winrate: 48% pickrate: 15%)Keeper of the Light
* Heroes with channeling abilities: Enigma, Witch Doctor, Crystal Maiden.
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.
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.
Centaur Warrunner
* 
Night Stalker is all about right-clicks. His nuke, Void is also not that threatning once you have Hood of Defiance, your core item.
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
Juggernaut
[wiki] rating: 0.4 (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.
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.
Monkey King
[wiki] rating: -1.6 (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.
Centaur Warrunner
* Heroes that can keep Monkey King stunned for a long time can pose a threat: 
Axe, 
Centaur Warrunner.
Pangolier
[wiki] rating: -1.6 (winrate: 48% pickrate: 9%)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
Centaur Warrunner
* Pangolier will proc Retaliate several times if he attempts to use 
Swashbuckle on Centaur Warrunner.
* Centaur can cast Stampede to allow all of his allies to easily avoid 
Rolling Thunder.
* Centaur's tankiness makes it hard for Pangolier to burst him down in the late game.
Additional:
* When Swashbuckle hits Centaur Warrunner, Retaliate will deal significant damage, as it procs off every strike made.
* 
Stampede helps allies avoid or disengage from Pangolier during Rolling Thunder, as well as neutralizing the slow debuff from Lucky Shot.
Faceless Void
[wiki] rating: -1.2 (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.
Centaur Warrunner
* Heroes that can stop Faceless Void from leaping around the fight and controlling its outcome are very strong against him. Heroes such as: Axe, Centaur Warrunner, Doom...
Sven
[wiki] rating: -1.2 (winrate: 48% pickrate: 2%)Keeper of the Light
* Melee carries during the laning phase: 
Sven, Slark
Centaur Warrunner
* Heroes who thrive on teamfights can be a problem such as Venomancer, 
Necrophos, Centaur Warrunner...
Naga Siren
[wiki] rating: -1.2 (winrate: 51% pickrate: 3%)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
Centaur Warrunner
* Heroes who are reliant on illusions: 
Chaos Knight, Phantom Lancer, Naga Siren.
Sniper
[wiki] rating: -1.0 (winrate: 44% pickrate: 11%)Centaur Warrunner
* 
Headshot and 
Shrapnel slow is ineffective against a team with haste (which Stampede gives).
* Commonly picked up mobility items and hasted movement during his Stampede (as well as his high health pool) make him extremely hard to kill from a distance, damaging 
Sniper with Retaliate and Blade Mail if he has one.
* A low health pool and no escape mechanism makes him an easy target for Centaur Warrunner's burst damage and initiation (even making his team possible initiators with Stampede).
Grimstroke
[wiki] rating: -1.0 (winrate: 46% pickrate: 4%)Centaur Warrunner
* Stampede can allow Soulbinded heroes to just ran away.
Phantom Assassin
[wiki] rating: -1.0 (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
Keeper of the Light
* Heroes which rely exclusively on right clicks will struggle somewhat against Blinding Light: Phantom Assassin, 
Wraith King, 
Medusa
Centaur Warrunner
* Hoof Stomp and Double Edge can often burst down Phantom Assassin from early to mid game.
* Retaliate makes it very unlikely for Phantom Assassin to win the lane against Warrunner. Double Edge can also be used to wear her down, as she has a much smaller health pool than that of Centaur Warrunner until purchasing a 
Ring of Health. 
Stifling Dagger will also trigger Retaliate and 
Blur cannot evade Retaliate.
* Centaur Warrunner's tankiness in combination with armour items that Axe often purchases like Blade Mail, 
Crimson Guard, 
Assault Cuirass and 
Shiva's Guard can make Phantom Assassin's attacks only tickle Centaur Warrunner.
* Centaur Warrunner just has to be careful about 
Fan of Knives from 
Aghanim's Shard and 
Coup De Grace, as Fan of Knives can disable Retaliate even if Centaur Warrunner is spell immune.
Additional:
* Hoof Stomp and Double Edge can often burst down Phantom Assassin from early to mid game.
* Retaliate makes it very unlikely for Phantom Assassin to win the lane against Warrunner. Double Edge can also be used to wear her down, as she has a much smaller health pool than that of Centaur Warrunner until purchasing a Ring of Health. Stifling Dagger will also trigger Retaliate and Blur cannot evade Retaliate.
* Centaur Warrunner's tankiness in combination with armour items that Axe often purchases like Blade Mail, Crimson Guard, Assault Cuirass and Shiva's Guard can make Phantom Assassin's attacks only tickle Centaur Warrunner.
* Centaur Warrunner just has to be careful about Fan of Knives from Aghanim's Shard and Coup De Grace, as Fan of Knives can disable Retaliate even if Centaur Warrunner is spell immune.
Windranger
[wiki] rating: -1.0 (winrate: 49% pickrate: 10%)Centaur Warrunner
* 
Focus Fire grants Windranger a massive attack speed bonus, while her attack damage is generally quite low. This, combined with Windranger's low health pool and armor, makes Retaliate do absolutely massive damage over a short time, making Centaur a hero she can never expect to kill or harass.
* 
Windrun grants evasion, but Centaur Warrunner does not rely on successful attacks in order to do damage. Hoof Stomp, Double Edge, and Stampede all do large amounts of magical damage and can completely demolish Windranger in a moment.
Additional:
* Stampede can help his teammates escape from Windrun and Focus Fire.
* Retaliate will shred through Windranger's health if she chooses to attack him during Focus Fire.
Beastmaster
[wiki] rating: -1.0 (winrate: 51% pickrate: 2%)Keeper of the Light
* Illuminate clears Beastmaster's summons and is effective against his push.
Razor
[wiki] rating: -1.0 (winrate: 52% pickrate: 7%)Centaur Warrunner
* Centaur can use Stampede to break Static Link. It also prevents Razor from chasing Centaur Warruner or his teammates with Eye of the Storm, and Plasma Field's slow will do nothing to slow them down.
Arc Warden
[wiki] rating: -1.0 (winrate: 53% pickrate: 5%)Centaur Warrunner
* Arc Warden cannot take Centaur Warrunner very easily, and his nukes are not strong enough to deal with Centaur Warrunner.
* Centaur Warrunner deals huge AoE damage and applies an AoE disable through Hoof Stomp, affecting the double as well the main Arc Warden.
* 
Magnetic Field is not very effective against melee heroes. And to make things worse, Magnetic Field also increases Arc Warden and his allies's attack speed, meaning Retaliate will deal more damage.
* Stampede catches Arc Warden easily due to his lack of escape mechanisms. However, Arc Warden can counter this problem with 
Gleipnir, which is a common item on Arc Warden.
Broodmother
[wiki] rating: -1.0 (winrate: 54% pickrate: 3%)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.
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.
Enchantress
[wiki] rating: -0.6 (winrate: 46% pickrate: 2%)Centaur Warrunner
* Heroes with haste can negate Enchant's slow: 
Weaver, Dark Seer, Lycan, Centaur Warrunner.
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
Chaos Knight
[wiki] rating: -0.6 (winrate: 47% pickrate: 3%)Centaur Warrunner
* Heroes who are reliant on illusions: Chaos Knight, Phantom Lancer, Naga Siren.
Void Spirit
[wiki] rating: -0.6 (winrate: 48% pickrate: 5%)Centaur Warrunner
* 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.
Spirit Breaker
[wiki] rating: -0.6 (winrate: 48% pickrate: 9%)Keeper of the Light
* Heroes that punish mobile heroes: 
Bloodseeker, Keeper of the Light
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
Viper
[wiki] rating: -0.6 (winrate: 49% pickrate: 4%)Keeper of the Light
* Heroes with extremely slow movement speed will cripple against Solar Bind: Medusa, Viper
Tusk
[wiki] rating: -0.6 (winrate: 49% pickrate: 15%)Centaur Warrunner
* 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%)Centaur Warrunner
* Troll Warlord's high speed attack makes Retaliate deal a lot of damage to him.
Magnus
[wiki] rating: -0.6 (winrate: 51% pickrate: 15%)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.
Drow Ranger
[wiki] rating: -0.6 (winrate: 51% pickrate: 18%)Centaur Warrunner
* Heroes who have low armor but very high health will be difficult for drow to burst down quickly: 
Primal Beast, Axe, Centaur Warrunner.
Chen
[wiki] rating: -0.6 (winrate: 51% pickrate: 0%)Keeper of the Light
* Heroes with summons/illusions/neutral creep armies: 
Beastmaster, 
Chen, Naga Siren
Queen of Pain
[wiki] rating: -0.4 (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
Centaur Warrunner
* A good Centaur can catch Queen of Pain with a Blink Dagger and Hoof Stomp.
* Retaliate with Blade Mail reflects all of Queen of Pain's damage, especially Sonic Wave.
* Stampede grants a movement speed bonus, which can prevent Queen of Pain from initiating.
* Double Edge can shred her low health pool if she's not careful.
Doom
[wiki] rating: -0.4 (winrate: 47% pickrate: 8%)Keeper of the Light
* Heroes with silences: Puck, Doom, Riki.
Centaur Warrunner
* Whenever Doom casts his ultimate, Centaur Warrunner can cast Stampede and allow the 
Doomed hero to run away, wasting Doom's ultimate.
Additional:
* Stampede can be used to free an ally from the grasp of Doom. Without any means of effective lockdown, kills can be difficult to secure when against an enemy Centaur Warrunner. Also, Centaur's tendency to have lots of health and HP regen tend to help counter Doom.
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
Centaur Warrunner
* His illusions will kill themselves in a few hits because of Retaliate. The nukes from Hoof Stomp and Double-Edge should be enough to clear them for a large portion of the game
* Centaur Warrunner's small mana pool makes 
Diffusal Blade's damage much lower once Centaur doesn't have any more mana left to burn. Keep in mind that Double Edge does not cost mana.
* Be wary when chasing down Phantom Lancer. Hoof Stomp's terrible cast time makes it quite easy to dodge with 
Doppelganger.
Additional:
* Hoof Stomp and Double Edge makes short work of Phantom Lancer's illusions.
* Retaliate together with Blade Mail reflects Phanton Lancer's damage and quickly destroys his illusions.
Anti-Mage
[wiki] rating: -0.2 (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
Centaur Warrunner
* Anti-Mage's Mana Void won't do a lot of damage because Centaur has a low mana pool. 
Mana Break is also relatively ineffective against him.
Puck
[wiki] rating: 0.0 (winrate: 48% pickrate: 9%)Keeper of the Light
* Heroes with silences: Puck, Doom, Riki.
Centaur Warrunner
* 
Bristleback, Centaur Warrunner, 
Spirit Breaker, 
Pudge, Huskar: These heroes are too tanky for Puck to burst down. Also, all of them have spells which can deal with and shut Puck down reliably.
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.
Centaur Warrunner
* Centaur's low Intelligence makes Mana Burn do low damage.
* With some creative skill builds, Centaur's Hoof Stomp stun duration should always last longer than Spiked Carapace stun, so escaping unscathed is hard for Nyx.
* With Blink Dagger and detection, Centaur can devastate Nyx in the open.
* However, bear in mind that Nyx can also easily initiate on Centaur Warrunner as well if he uses Spiked Carapace in anticipation, and with Vendetta. The damage from Retaliate will be reflected back to Centaur Warrunner, stunning him with no chance to react after he's revealed himself, and should guarantee a successful 
Impale.
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
Lycan
[wiki] rating: 0.0 (winrate: 57% pickrate: 3%)Keeper of the Light
* Heroes with hastes: Dark Seer, Lycan
Keeper of the Light
* Keeper of the Light has a blind, which causes Lycan to miss his attacks.
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.
Centaur Warrunner
*
Feast is an effective tool against Centaur Warrunner, who generally has high health and low armor, and compensates the reflected damage of Retaliate.
Rage can protect Lifestealer from Hoof Stomp, Double Edge, and Stampede.
Hoof Stomp's slow wind up can also be anticipated and negated with Rage.
Retaliate's damage return simply with Feast. Centaur's high strength gain and therefore big health pool makes him an ideal target to Feast on, especially in the late-game.
* If activated,
Additional:
* Centaur Warrunner's active abilities cannot pierce magic immunity.
* Lifestealer can offset