Nyx Assassin
[wiki] rating: 1.6 (winrate: 54% pickrate: 7%)Tidehunter
[wiki] rating: 1.0 (winrate: 50% pickrate: 10%)Sand King
* 
Ravage, being an AoE disable, cancels Epicenter's channeling from a long range, limiting his potential to counter-initiate.
* This can be remedied, however, by first using a 
Black King Bar, then channel Epicenter, then finally initiate with 
Blink Dagger.
Phoenix
[wiki] rating: 1.0 (winrate: 50% pickrate: 9%)Sand King
* Sand King has nothing to deal with 
Supernova, as none of his spells are effective.
* The damage-over-time abilities of Phoenix disable Sand King's Blink Dagger very often.
Silencer
[wiki] rating: 1.0 (winrate: 49% pickrate: 5%)Sand King
* Both 
Arcane Curse and 
Last Word punishes casters with spammable spells such as Sand King.
* As a strength caster, 
Intelligence Steal reduces Sand King's mana pool even more.
* 
Global Silence silences Sand King, effectively reducing Sand King's initiation and counter-initiation potential. It can also interrupt channeling of Epicenter.
Earth Spirit
[wiki] rating: 1.0 (winrate: 48% pickrate: 10%)Sand King
* 
Boulder Smash will push Sand King out of Sand Storm to reveal his position or an activated Epicenter off of Earth Spirit's allies, potentially wasting his combo
* 
Rolling Boulder and 
Geomagnetic Grip allow Earth Spirit to easily stun and silence Sand King and interrupt the channeling of Epicenter, completely ruining his initiation.
Lifestealer
[wiki] rating: 1.0 (winrate: 48% pickrate: 5%)Keeper of the Light
* 
Rage allows him to dispel Blinding Light from himself.
* 
Open Wounds allows him to slow and kill Keeper of the Light.
Sand King
* 
Lifestealer's Rage negates Sand King's spells which do magical damage.
Sand King
* Heroes that rely on slows to get kills: Lifestealer, 
Night Stalker, 
Ursa,...
Zeus
[wiki] rating: 1.0 (winrate: 46% pickrate: 8%)Sand King
* 
Zeus usually stays at the back in teamfights and it is hard for Sand King to find Zeus and knock him down before Zeus deals his damage.
* All of Zeus' abilities, especially 
Thundergod's Wrath, disables Sand King's Blink Dagger, effectively reducing Sand King's initiation and counter-initiation potential.
* 
Lightning Bolt deals damage to Sand King in Sand Storm and reveals him. It also interrupts channeling of Epicenter.
Rubick
[wiki] rating: 1.0 (winrate: 46% pickrate: 16%)Sand King
* Burrowstrike is one of the best and easiest steals for Rubick and Sand King should be careful when playing against him - it's much better to give away Sand Storm.
Bristleback
[wiki] rating: 1.0 (winrate: 46% pickrate: 8%)Sand King
* Quill Spray will hit Sand King inside 
Sand Storm, damaging him and putting Sand King's Blink Dagger on cooldown, preventing him from escaping.
* 
Epicenter's numerous damage ticks will trigger Bristleback's passive repeatedly during teamfights.
Kunkka
[wiki] rating: 1.0 (winrate: 44% pickrate: 3%)Sand King
* 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
Huskar
[wiki] rating: 0.6 (winrate: 52% pickrate: 3%)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.
Puck
[wiki] rating: 0.6 (winrate: 52% pickrate: 17%)Keeper of the Light
* Low health spellcasters: 
Lina, 
Witch Doctor, 
Tinker, Keeper of the Light, all rely heavily on their spells and are fragile heroes. They all also have avoidable spells, allowing Puck to get to them and quickly burst them down.
Oracle
[wiki] rating: 0.6 (winrate: 51% pickrate: 10%)Keeper of the Light
* Heroes with dispels: 
Legion Commander, 
Oracle, 
Slark
Lion
[wiki] rating: 0.6 (winrate: 50% pickrate: 17%)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.
Storm Spirit
[wiki] rating: 0.6 (winrate: 49% pickrate: 12%)Keeper of the Light
* Heroes with teleports to escape Will-O-Wisp: 
Phantom Assassin, 
Puck, 
Queen of Pain, 
Storm Spirit
Queen of Pain
[wiki] rating: 0.6 (winrate: 47% pickrate: 9%)Keeper of the Light
* Heroes with teleports to escape Will-O-Wisp: Phantom Assassin, Puck, Queen of Pain, Storm Spirit
Tiny
[wiki] rating: 0.6 (winrate: 45% pickrate: 5%)Keeper of the Light
* Squishy heroes, usually supports, like 
Io, 
Ancient Apparition, Keeper of the Light etc can die instantly from Tiny's magic burst.
Night Stalker
[wiki] rating: 0.4 (winrate: 52% pickrate: 5%)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, who relies on daytime to be effective.
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.
Sand King
* Heroes that rely on slows to get kills: Lifestealer, Night Stalker, Ursa,...
Juggernaut
[wiki] rating: 0.4 (winrate: 52% pickrate: 19%)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.
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.
Legion Commander
[wiki] rating: 0.4 (winrate: 47% pickrate: 11%)Keeper of the Light
* 
Press the Attack can dispel the blind from Blinding Light 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
Nature's Prophet
[wiki] rating: -1.6 (winrate: 44% pickrate: 5%)Keeper of the Light
* Heroes that have AoE damage: Lina, Keeper of the Light, 
Timbersaw, 
Leshrac, 
Bristleback, 
Axe
Sand King
* Sand King has many tools to deal with Nature's Prophet's treants.
* Sand King also can interrupt Teleportation with 
Burrowstrike.
Additional:
* With Caustic Finale, Sand King can easily kill the treants from 
Nature's Call.
* Burrowstrike allows Sand King to prevent Nature's Prophet from using 
Teleportation inside of his 
Sprout.
Magnus
[wiki] rating: -1.2 (winrate: 44% pickrate: 4%)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.
Sand King
* 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.
Terrorblade
[wiki] rating: -1.2 (winrate: 46% pickrate: 4%)Sand King
* Because of his massive AoE damage, Sand King is very effective against illusion heroes: 
Chaos Knight, 
Phantom Lancer, 
Terrorblade,...
Keeper of the Light
* Keeper of the Light can stall pushes with {Ability ID:Illuminate|Keeper of the Light} this makes him strong against pushing heroes: Terrorblade Naga siren 
Nature's Prophet and Anti-Mage
Naga Siren
[wiki] rating: -1.2 (winrate: 54% pickrate: 2%)Sand King
* Sand King and Phoenix has many tools to deal with a crowd of Heroes, which will work well against a crowd of illusions.
Keeper of the Light
* Keeper of the Light can stall pushes with {Ability ID:Illuminate|Keeper of the Light} this makes him strong against pushing heroes: Terrorblade Naga siren Nature's Prophet and Anti-Mage
Medusa
[wiki] rating: -1.0 (winrate: 45% pickrate: 2%)Keeper of the Light
* 
Chakra Magic can drain her current mana, draining away her effective health in a sneaky way.
* Will-O-Wisp will keep Medusa busy after she got hit by Blinding Light.
Monkey King
[wiki] rating: -1.0 (winrate: 50% pickrate: 16%)Keeper of the Light
* Blinding Light can easily push Monkey King out of Wukong's Command, as well as blinding him.
* Will-O-Wisp destroys trees in a massive area, damaging Monkey King's mobility
* However, Keeper of the Light can be easily ganked by Monkey King during early-mid game stage.
Additional:
* Blinding Light can knock Monkey King outside of his ultimate, Wukong's Command or can generally blind him effectively.
* Will-O-Wisp stun Monkey King from Tree Dance by destroying his tree.
Wraith King
[wiki] rating: -1.0 (winrate: 51% pickrate: 17%)Keeper of the Light
* Wraith King's poor mobility makes him vulnerable to Illuminate.
* Blinding Light can reduce his damage output as well as his already abysmal mobility.
* Chakra Magic drains Wraith King's much-needed mana resulting in him not being able to reincarnate
Phantom Lancer
[wiki] rating: -1.0 (winrate: 51% pickrate: 10%)Sand King
* All of Sand King's abilities deal AoE damage.
* Epicenter will usually eliminate all illusions in one cast. Phantom Lancer lacks any disables to stop the channelling.
Chen
[wiki] rating: -1.0 (winrate: 52% pickrate: 0%)Sand King
* Burrowstrike and Sand Storm will deal a large amount of damage to Chen's creeps.
* 
Caustic Finale will quickly clear Chen's creeps at low health.
Beastmaster
[wiki] rating: -1.0 (winrate: 53% pickrate: 6%)Keeper of the Light
* Illuminate clears Beastmaster's summons and is effective against his push.
Broodmother
[wiki] rating: -1.0 (winrate: 53% pickrate: 2%)Sand King
* Caustic Finale allows Sand King to easily kill Broodmother's Spiderlings throughout the game.
* Sand King can usually catch a split pushing Broodmother with Blink Dagger and Burrowstrike.
Additional:
* Burrowstrike can be used as an escape or initiation against Broodmother.
* Sand Storm quickly kills any spiderlings caught inside if Sand King can manage to stun them.
Enigma
[wiki] rating: -1.0 (winrate: 55% pickrate: 8%)Keeper of the Light
* Ezalor's Chakra Magic will drain Enigma's mana pool rather quickly and won't let him chase or initiate with Black Hole properly.
* Will-O-Wisp will disable any close caster like Enigma, forcing him have to keep his Eidolons at maximum count and keep a safe distance.
* Illuminate can wipe the pushing Eidolons in a lane with ease, diminishing Enigma's laning presence by a lot.
Faceless Void
[wiki] rating: -0.6 (winrate: 41% pickrate: 3%)Keeper of the Light
* Any hero that can nullify effects of Chronosphere: (Omniknight, 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.
Sven
[wiki] rating: -0.6 (winrate: 43% pickrate: 1%)Keeper of the Light
* Keeper of the Light's AoE blind can keep Sven from landing hits.
Enchantress
[wiki] rating: -0.6 (winrate: 46% pickrate: 1%)Sand King
* Sand King is a strong ganker, allowing him to shut down squishy heroes in the early game: Phantom Assassin, 
Clinkz, 
Sniper, 
Enchantress,...
Dragon Knight
[wiki] rating: -0.6 (winrate: 48% pickrate: 4%)Sand King
* Heroes with no mobility will take some good damage from Sand King's spells: 
Dragon Knight, Jakiro, Pugna, 
Earthshaker,...
Techies
[wiki] rating: -0.6 (winrate: 48% pickrate: 8%)Keeper of the Light
* Heroes with flying vision such as 
Visage, 
Beastmaster, Keeper of the Light, or Night Stalker can scout your mines from outside their trigger radius.
Earthshaker
[wiki] rating: -0.6 (winrate: 49% pickrate: 12%)Sand King
* Heroes with no mobility will take some good damage from Sand King's spells: Dragon Knight, Jakiro, Pugna, Earthshaker,...
Anti-Mage
[wiki] rating: -0.6 (winrate: 49% pickrate: 13%)Keeper of the Light
* Keeper of the Light can stall pushes with {Ability ID:Illuminate|Keeper of the Light} this makes him strong against pushing heroes: Terrorblade Naga siren Nature's Prophet and Anti-Mage
Sniper
[wiki] rating: -0.6 (winrate: 49% pickrate: 6%)Sand King
* Sand King is a strong ganker, allowing him to shut down squishy heroes in the early game: Phantom Assassin, Clinkz, Sniper, Enchantress,...
Pangolier
[wiki] rating: -0.6 (winrate: 49% pickrate: 12%)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
Jakiro
[wiki] rating: -0.6 (winrate: 50% pickrate: 9%)Sand King
* Heroes with no mobility will take some good damage from Sand King's spells: Dragon Knight, Jakiro, Pugna, Earthshaker,...
Spirit Breaker
[wiki] rating: -0.6 (winrate: 51% pickrate: 8%)Keeper of the Light
* Heroes that punish mobile heroes: 
Bloodseeker, Keeper of the Light
Ursa
[wiki] rating: -0.6 (winrate: 51% pickrate: 16%)Sand King
* Heroes that rely on slows to get kills: Lifestealer, Night Stalker, Ursa,...
Chaos Knight
[wiki] rating: -0.6 (winrate: 52% pickrate: 3%)Sand King
* Because of his massive AoE damage, Sand King is very effective against illusion heroes: Chaos Knight, Phantom Lancer, Terrorblade,...
Additional:
* Sand King's massive area damage output, particularly Epicenter, allows him to quickly take down Chaos Knight and his illusions.
* He can apply Caustic Finale to illusions with attacks for extra damage.
Lycan
[wiki] rating: -0.6 (winrate: 54% pickrate: 3%)Keeper of the Light
* Keeper of the Light has a blind, which causes Lycan to miss his attacks.
Phantom Assassin
[wiki] rating: -0.4 (winrate: 45% pickrate: 16%)Keeper of the Light
* Heroes with teleports to escape Will-O-Wisp: Phantom Assassin, Puck, Queen of Pain, Storm Spirit
Sand King
* Phantom Assassin relies on her 
Blur to stay alive, but is very vulnerable to Sand King's heavy magic damage.
* With Burrowstrike, Sand King can often catch Phantom Assassin before she can use her Black King Bar.
* Sand King can dodge 
Stifling Dagger with Sandstorm.
* Phantom Assassin has a hard time killing Sand King because of his high mobility.
Meepo
[wiki] rating: -0.4 (winrate: 45% pickrate: 1%)Keeper of the Light
* Heroes that can jump and kill him: 
Meepo, Clinkz, 
Templar Assassin
Sand King
* Burrowstrike can stun multiple Meepos, making them vulnerable targets.
* Epicenter and Sand Storm's AoE damage ensures all Meepo clones get damaged, making it hard for Meepo to choose which one to flee as all are taking damage at the same rate.
* Just be aware when using Sand Storm to escape, as Meepo has good AoE damage and disables, which, as explained in the "Bad Against" section, works well against an invisible Sand King.
Slark
[wiki] rating: -0.4 (winrate: 48% pickrate: 13%)Sand King
* Heroes with blink or movement abilities, which are disabled by Pounce's leash: Anti-Mage, Earth Spirit, Faceless Void, 
Magnus, 
Mirana, 
Monkey King, 
Morphling, 
Pangolier, Phantom Assassin, Phoenix, Puck, Queen of Pain, Riki, Sand King, 
Spirit Breaker, Timbersaw, 
Tusk.
Keeper of the Light
* Heroes with dispels: Legion Commander, Oracle, Slark
Keeper of the Light
* Melee carries during the laning phase: Sven, Slark
Sand King
* He has a hard time killing Sand King because of the survivability he gets from Burrowstrike and Sand Storm.
* 
Shadow Dance, which usually allows Slark to survive fights, is ineffective against Sand King's AoE damage.
Templar Assassin
[wiki] rating: -0.4 (winrate: 51% pickrate: 5%)Keeper of the Light
* Heroes that can jump and kill him: Meepo, Clinkz, Templar Assassin
Sand King
* Sand King can quickly remove her 
Refraction with his Sand Storm.
* Once Refraction is down, she is very vulnerable to Epicenter's high magic damage.
Pugna
[wiki] rating: 0.0 (winrate: 53% pickrate: 4%)Sand King
* Pugna's 
Nether Ward damages Sand King when he channels Epicenter, preventing him from using Blink Dagger afterward.
Sand King
* Heroes with no mobility will take some good damage from Sand King's spells: Dragon Knight, Jakiro, Pugna, Earthshaker,...
Clinkz
[wiki] rating: 0.0 (winrate: 53% pickrate: 4%)Keeper of the Light
* Heroes that can jump and kill him: Meepo, Clinkz, Templar Assassin
Sand King
* Sand King is a strong ganker, allowing him to shut down squishy heroes in the early game: Phantom Assassin, Clinkz, Sniper, Enchantress,...
Sand King
* Deals damage over time:
Venomancer, 
Huskar, 
Ember Spirit, 
Dark Seer, 
Sand King, 
Doom
Skywrath Mage, 
Tinker, 
Necrophos
Enigma, 
Crystal Maiden, 
Invoker, 
Shadow Fiend, 
Pugna, 
Keeper of the Light
Venomancer, 
Huskar, 
Ember Spirit, 
Dark Seer, 
Sand King, 
Doom
* The nature of some abilities turn them into an easy target for a turnover from Spiked Carapace:
* Slow-moving projectiles:
* Large area-of-effect with delay or require channeling:
* Deals damage over time:
Keeper of the Light
*
Mana Burn is strong against Keeper of the Light due to his high mana pool.
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.
*
*