Razor
[wiki] rating: 2.0 (winrate: 54% pickrate: 6%)Ursa
[wiki] rating: 2.0 (winrate: 51% pickrate: 16%)Underlord
* Provided Ursa can stack Fury Swipes reliably, Atrophy Aura won't do much against it.
* With Overpower, Fury Swipes, and Enrage Ursa could kill Underlord before the latter escapes with 
Dark Rift.
Additional:
* 
Fury Swipes damage is not reduced by Atrophy Aura, essentially bypassing Underlord's only natural defense.
* 
Enrage can quickly dispel the root of Pit of Malice.
Dragon Knight
* Fury swipes can tear Dragon knight down as it stacks infinitely.
Outworld Destroyer
[wiki] rating: 2.0 (winrate: 51% pickrate: 13%)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.
Underlord
* Arcane Orb 's pure damage can do great damage to Underlord.
* Sanity's Eclipse can tear down Underlord's health by a large amount, since his mana pool is very low compare to OD's high mana pool.
Necrophos
[wiki] rating: 1.4 (winrate: 50% pickrate: 3%)Underlord
* 
Reaper's Scythe and 
Heartstopper Aura deal percentage-based damage, ignoring Underlord's high health.
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.
Hoodwink
[wiki] rating: 1.2 (winrate: 52% pickrate: 15%)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.
Underlord
* 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.
Ancient Apparition
[wiki] rating: 1.0 (winrate: 52% pickrate: 10%)Dragon Knight
* 
Cold Feet and 
Ice Vortex both hinder Dragon Knight's movement greatly during teamfights.
* 
Ice Blast ignores Dragon Knight's armor and kills him prematurely.
Luna
[wiki] rating: 1.0 (winrate: 51% pickrate: 7%)Underlord
* 
Lunar Blessing gives allies bonus damage and armor required to endure against Atrophy Aura early on.
* 
Eclipse can be devastating for Underlord's team when they're grouped up for Dark Rift, it can also be used to intercept arrivals with Dark Rift. And Pit of Malice does not prevent Luna to use it.
* To make things even better, 
Aghanim's Scepter upgraded Eclipse can finish off Underlord or any of his teammates escape attempts with Dark Rift if timed correctly.
Additional:
* Lunar Blessing gives allies bonus damage required to endure against Atrophy Aura early on.
* Eclipse can be devastating for Underlord's team when they're grouped up for Dark Rift, it can also be used to intercept arrivals with Dark Rift. And Pit of Malice does not prevent Luna from using it.
* To make things even worse, Aghanim's Scepter upgraded Eclipse can finish off Underlord or any of his teammates escape attempts with Dark Rift if timed correctly.
Io
[wiki] rating: 1.0 (winrate: 51% pickrate: 7%)Underlord
* Io can escape from Pit of Malice with Tether or Relocate.
* Relocate can counter Dark Rift's split pushing.
Monkey King
[wiki] rating: 1.0 (winrate: 50% pickrate: 16%)Underlord
* 
Firestorm will do little percentage damage to a small HP hero like Monkey King.
* All aspects of Jingu Mastery benefits ignore 
Atrophy Aura's base damage reduction.
* Monkey King can get on top of Underlord easily at any stage of the game.
Disruptor
[wiki] rating: 1.0 (winrate: 49% pickrate: 9%)Underlord
* 
Glimpse will return Underlord or any of his teammates attempting to escape with Dark Rift if timed correctly.
* Underlord is a slow and low mobility hero, easy to set up 
Static Storm and 
Kinetic Field, preventing him from using his abilities as well as preventing him using Dark Rift to escape
Winter Wyvern
[wiki] rating: 1.0 (winrate: 49% pickrate: 7%)Underlord
* 
Winter's Curse and 
Splinter Blast can devastate Underlord's team when they're grouped up for Dark Rift.
Lich
[wiki] rating: 1.0 (winrate: 48% pickrate: 10%)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: 48% pickrate: 8%)Dragon Knight
* Timbersaw's pure damage will kill Dragon Knight surprisingly fast, especially if he gets caught in a bad position while laning.
Viper
[wiki] rating: 1.0 (winrate: 47% pickrate: 6%)Dragon Knight
* In the early game, a Dragon Knight without 
Black King Bar is basically defenseless against Viper.
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.
Rubick
[wiki] rating: 1.0 (winrate: 46% pickrate: 16%)Underlord
* All of Underlord's abilities are useful for Rubick to 
Spell Steal.
Bristleback
[wiki] rating: 1.0 (winrate: 46% pickrate: 8%)Dragon Knight
* 
Viscous Nasal Goo slows down Dragon Knight and lowers armor, locking him down and making him more vulnerable.
Kunkka
[wiki] rating: 1.0 (winrate: 44% pickrate: 3%)Underlord
* 
X Marks the Spot will return Underlord or his teammate if they escape with Dark Rift.
Bane
[wiki] rating: 0.6 (winrate: 54% pickrate: 3%)Underlord
* Heroes that wish to disrupt fights with spell combos or big ultimates are vulnerable to the long stun of Fiend's Grip: 
Disruptor, 
Death Prophet, 
Enigma, 
Faceless Void, 
Invoker, 
Lich, 
Magnus, 
Mars, 
Medusa, 
Outworld Destroyer, 
Phoenix, 
Puck, 
Queen of Pain, 
Shadow Fiend, 
Treant Protector, Underlord, 
Winter Wyvern, 
Witch Doctor, 
Zeus.
Huskar
[wiki] rating: 0.6 (winrate: 52% pickrate: 3%)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.
Clockwerk
[wiki] rating: 0.6 (winrate: 52% pickrate: 7%)Underlord
* Heroes with long cast animations can be continuously interrupted by Battery Assault: 
Centaur Warrunner, 
Jakiro, 
Leshrac, 
Naga Siren, Underlord.
Sand King
[wiki] rating: 0.6 (winrate: 51% pickrate: 10%)Dragon Knight
* Heroes with no mobility will take some good damage from Sand King's spells: Dragon Knight, Jakiro, 
Pugna, 
Earthshaker,...
Gyrocopter
[wiki] rating: 0.6 (winrate: 50% pickrate: 5%)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: 5%)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: 49% pickrate: 1%)Dragon Knight
* 
Elder Titan's 
Natural Order completely nullifies Dragon Knight's high armor.
Treant Protector
[wiki] rating: 0.6 (winrate: 49% pickrate: 5%)Underlord
* In general, heroes that provide vision will see Dark Rift coming: 
Techies, 
Templar Assassin, Treant Protector
Sniper
[wiki] rating: 0.6 (winrate: 49% pickrate: 6%)Underlord
* Heroes who Sniper can kite: Sven, 
Wraith King, 
Kunkka, 
Doom, 
Tidehunter, Underlord, 
Troll Warlord, and etc.
Additional:
* Sniper's very long range allows him to stay out of Firestorm and Pit of Malice as well as Atrophy Aura range.
Techies
[wiki] rating: 0.6 (winrate: 48% pickrate: 8%)Underlord
* In general, heroes that provide vision will see Dark Rift coming: Techies, Templar Assassin, Treant Protector
Shadow Demon
[wiki] rating: 0.6 (winrate: 47% pickrate: 2%)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.
Omniknight
[wiki] rating: 0.6 (winrate: 47% pickrate: 1%)Dragon Knight
* Heroes who rely strongly on melee physical damage will fare badly against Omniknight's Guardian Angel: Sven, Phantom Assassin, 
Juggernaut, Dragon Knight, 
Lycan, Ursa, Troll Warlord
Shadow Fiend
[wiki] rating: 0.6 (winrate: 46% pickrate: 18%)Underlord
* Shadow Fiend can still dish out heavy damage with 
Requiem of Souls and 
Shadowraze while caught in Pit of Malice.
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.
Drow Ranger
[wiki] rating: 0.4 (winrate: 47% pickrate: 4%)Dragon Knight
* Dragon Knight has no built in disengage from 
Frost Arrows, and 
Marksmanship procs ignore base armor, bypassing Dragon Knight’s tankiness 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)
Additional:
* Dragon Knight has no built in disengage from Frost Arrows, and Marksmanship procs ignore base armor, bypassing Dragon Knight’s tankiness 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)
Underlord
* Underlord can not only cancel Marksmanship's aura, but his Atrophy Aura also decreases Drow Ranger's attack damage.
Additional:
* Atrophy Aura reduces Drow Ranger's damage significantly, as she relies on agility.
Legion Commander
[wiki] rating: -2.0 (winrate: 47% pickrate: 11%)Underlord
* Atrophy Aura's percentage-based damage reduction greatly diminishes Legion Commander's overall damage output, even if she has won many Duels.
* Dark Rift can be used to save Underlord or his allies from Duels if properly timed.
Additional:
* Atrophy Aura makes it hard for Legion Commander to win 
Duels.
* Dark Rift can be used to save Underlord and his allies from a Duel.
Dragon Knight
* Dragon Knight's high natural sustain and health regeneration from Dragon Blood makes him hard to take down in Duels.
Riki
[wiki] rating: -2.0 (winrate: 48% pickrate: 5%)Underlord
* 
Pit of Malice prevents Riki from casting Blink Strike or Tricks of the Trade.
* Atrophy Aura reduces Riki's damage.
* Firestorm can be used to harrass Riki in lane.
Dragon Knight
* Riki does little damage to Dragon Knight, as he relies only on physical damage with modest attack speed and lack of burst.
Spirit Breaker
[wiki] rating: -2.0 (winrate: 51% pickrate: 8%)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.
Underlord
* Pit of Malice can be cast in the path of Spirit Breaker's Charge of Darkness to cancel it.
* Dark Rift provides a way to escape from a gank for Underlord and his teammates.
Bloodseeker
[wiki] rating: -2.0 (winrate: 51% pickrate: 4%)Dragon Knight
* 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.
Underlord
* Damage reduction from Atrophy Aura prevents Bloodseeker from killing targets and gaining his Thirst bonuses.
* Pit of Malice's area of effect catches Bloodseeker easily, negating his speed bonus during teamfights.
* Dark Rift allows Underlord to transport Ruptured allies to the fountain, rendering it useless.
Phantom Lancer
[wiki] rating: -1.6 (winrate: 51% pickrate: 10%)Underlord
* Heroes that require burst damage to kill will be difficult for Phantom Lancer to take down: 
Timbersaw, Axe, Bristleback, 
Alchemist and Underlord
Additional:
* Firestorm is very useful for clearing multiple illusions swiftly.
* Pit of Malice will continuously disrupt many illusions, drastically reducing their damage and potency.
* Athropy Aura reduces damage of both Phantom Lancer and his illusions.
Dragon Knight
* 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.
Troll Warlord
[wiki] rating: -1.6 (winrate: 52% pickrate: 12%)Underlord
* Atrophy Aura decreases Troll Warlord's damage.
* Pit of Malice helps lock down Troll Warlord.
* Battle Trance disallows Troll from running out of both Firestorm and Pit of Malice.
Dragon Knight
* Heroes that rely on physical damage are ineffective against Dragon Knight due to his high armor: Phantom Assassin,
Bloodseeker, 
Lifestealer, Troll Warlord
Chen
[wiki] rating: -1.6 (winrate: 52% pickrate: 0%)Dragon Knight
* Heroes with cleave abilities and 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.
Underlord
* Firestorm will easily clear Chen's creeps.
* Pit of Malice will trap Chen and render him helpless.
* Atrophy Aura gives bonus damage to Underlord for each killed creep and weakens Chen's damage.
* Dark Rift can counter Chen's pushing attempts, and he has nothing to intercept it.
Templar Assassin
[wiki] rating: -1.4 (winrate: 51% pickrate: 5%)Underlord
* In general, heroes that provide vision will see Dark Rift coming: Techies, Templar Assassin, Treant Protector
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.
Underlord
* Firestorm will destroy 
Refraction charges very quickly.
* Firestorm will hit Templar Assassin while Melded.
* Templar Assassin has a hard time maneuvering around Pit of Malice.
Nature's Prophet
[wiki] rating: -1.0 (winrate: 44% pickrate: 5%)Underlord
* Firestorm quickly kills all the treants and increases the Atrophy Aura passive.
* Pit of Malice can stop Teleportation channeling.
* Atrophy Aura greatly reduces Nature's Prophet's damage and he has no other ways of dealing damage.
* Dark Rift can counter split-pushing, which is something that Nature's Prophet relies a lot, and Nature's Prophet has very little solutions to intercept Dark Rift.
Lone Druid
[wiki] rating: -1.0 (winrate: 46% pickrate: 1%)Underlord
* Firestorm's percentage damage can quickly demolish the Spirit Bear's high HP
* Pit of Malice will allow allies to easily kite Lone Druid due to his low mobility
Witch Doctor
[wiki] rating: -1.0 (winrate: 47% pickrate: 13%)Dragon Knight
* 
Death Ward does little damage against Dragon Knight's armor, and Dragon Knight's high health regeneration minimizes damage from 
Maledict.
Mars
[wiki] rating: -1.0 (winrate: 48% pickrate: 16%)Underlord
* Firestorm and Pit of Malice are very disruptive in team fights, completely matching Mars especially since it can all be cast inside Arena Of Blood and also does percentage-based magical damage, negating Bulwark.
* Dark Rift can save any allies of Underlord trapped in Arena Of Blood.
* Atrophy Aura allows Underlord to lane against Mars quite well since he does not have the best base damage during the early game.
* Underlord is a common carrier of both 
Pipe of Insight and 
Mekansm/
Guardian Greaves, allowing his team to combat Mars in the mid to late game.
Silencer
[wiki] rating: -1.0 (winrate: 49% pickrate: 5%)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.
Chaos Knight
[wiki] rating: -1.0 (winrate: 52% 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: 52% pickrate: 16%)Dragon Knight
* Dragon Knight can simply tank and destroy all Shadow Shaman's Serpent Wards.
Clinkz
[wiki] rating: -1.0 (winrate: 53% pickrate: 4%)Dragon Knight
* The extra damage from 
Searing Arrows is largely blocked by Dragon Knight's armor.
Nyx Assassin
[wiki] rating: -1.0 (winrate: 54% pickrate: 7%)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.
Sven
[wiki] rating: -0.6 (winrate: 43% pickrate: 1%)Underlord
* In general, melee 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.
Magnus
[wiki] rating: -0.6 (winrate: 44% pickrate: 4%)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.
Tiny
[wiki] rating: -0.6 (winrate: 45% pickrate: 5%)Underlord
* In general, melee 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.
Phantom Assassin
[wiki] rating: -0.6 (winrate: 45% pickrate: 16%)Dragon Knight
* Heroes that rely on physical damage are ineffective against Dragon Knight due to his high armor: Phantom Assassin,Bloodseeker, Lifestealer, Troll Warlord
Additional:
* High armor thanks to Dragon Blood makes it difficult for Phantom Assassin to burst down Dragon Knight, as she deals 100% physical damage.
* Dragon Tail stuns Phantom Assassin as soon as she initiates, preventing her from gaining bonus attack speed.
* Dragon Knight is one of the few heroes who can safely solo lane against Phantom Assassin alongside a support.
Meepo
[wiki] rating: -0.6 (winrate: 45% pickrate: 1%)Underlord
* In general, melee 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.
Morphling
[wiki] rating: -0.6 (winrate: 46% pickrate: 12%)Underlord
* Underlord's Atrophy Aura reduces Morphling's high base damage gained through agility shift.
Slark
[wiki] rating: -0.6 (winrate: 48% pickrate: 13%)Underlord
* Heroes with AoE abilities will hit Slark in Shadow Dance: 
Lina, Jakiro, Underlord, Leshrac, Dark Seer, Earthshaker, Timbersaw, 
Crystal Maiden
Void Spirit
[wiki] rating: -0.6 (winrate: 50% pickrate: 13%)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.
Tusk
[wiki] rating: -0.6 (winrate: 50% pickrate: 13%)Dragon Knight
* Durable heroes can stand against Tusk during 1v1: Axe, Dragon Knight, Night Stalker, Centaur Warrunner, Wraith King and more.
Undying
[wiki] rating: -0.6 (winrate: 50% pickrate: 4%)Underlord
* In general, melee 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.
Wraith King
[wiki] rating: -0.6 (winrate: 51% pickrate: 17%)Underlord
* In general, melee 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.
Dark Seer
[wiki] rating: -0.6 (winrate: 51% pickrate: 3%)Underlord
* In general, melee 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.
Juggernaut
[wiki] rating: -0.6 (winrate: 52% pickrate: 19%)Underlord
* In general, heroes with spell immunity abilities won't be caught inside by Pit of Malice: Juggernaut, Lifestealer.
Dragon Knight
* Heroes with high armor and/or durability can handle Juggernaut's ultimate, such as Sven and Dragon Knight.
Underlord
* Heroes with abilities that can save teammates are also effective such as 
Shadow Demon, 
Dazzle, 
Oracle, 
Bane, Pugna, 
Tusk, Winter Wyvern, 
Io, Underlord, Treant Protector and 
Keeper of the Light.
Night Stalker
[wiki] rating: -0.6 (winrate: 52% pickrate: 5%)Dragon Knight
* Heroes that are hard to gank: Dragon Knight, Mars, Centaur Warrunner.
Alchemist
[wiki] rating: -0.6 (winrate: 53% pickrate: 14%)Underlord
* In general, melee 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.
Broodmother
[wiki] rating: -0.6 (winrate: 53% pickrate: 2%)Dragon Knight
* 
Broodmother's spiderlings and spiderites do almost nothing against Dragon Knight.
Additional:
* 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.
Naga Siren
[wiki] rating: -0.6 (winrate: 54% pickrate: 2%)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.
Bounty Hunter
[wiki] rating: -0.6 (winrate: 54% pickrate: 10%)Underlord
* In general, melee 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.
Lycan
[wiki] rating: -0.6 (winrate: 54% pickrate: 3%)Dragon Knight
* Dragon Knight's insanely high armor and splash damage can cause Lycan to struggle taking him down.
Venomancer
[wiki] rating: -0.4 (winrate: 50% pickrate: 5%)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.
Underlord
* Dark Rift allows Underlord to transport allies from poison damage-over-time to the fountain.
* Underlord usually buys Pipe of Insight that gives a magic resistance to allies, inhibiting the damage from Venomancer abilities.
Doom
[wiki] rating: 0.0 (winrate: 44% pickrate: 2%)Underlord
* An Aghanim's Scepter upgraded 
Doom can be useful against heroes with troublesome passive skills while also disabling them for a long time: Phantom Assassin, Enchantress, Huskar, Underlord.
Additional:
* 
Infernal Blade does damage based on percentage health, and is useful against high health pool hero like Underlord
* Doom can prevent Underlord from spamming his abilities and most important is prevent him from using Dark Rift to escape
Underlord
* In general, melee 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.
Lifestealer
[wiki] rating: 0.0 (winrate: 48% pickrate: 5%)Underlord
* In general, heroes with spell immunity abilities won't be caught inside by Pit of Malice: Juggernaut, Lifestealer.
Dragon Knight
* Heroes that rely on physical damage are ineffective against Dragon Knight due to his high armor: Phantom Assassin,Bloodseeker, Lifestealer, Troll Warlord
Pangolier
[wiki] rating: 0.0 (winrate: 49% pickrate: 12%)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
Underlord
* Heroes with powerful rooting abilities will disable most of Pangolier's skill, a bonus point if it pierce spell immunity since it will also be able to stop Pangolier during his Rolling Thunder: Treant Protector, Meepo, Crystal Maiden, 
Dark Willow, Underlord, Naga Siren
Underlord
*
Static Link greatly reduces Underlord damage, while benefits Razor himself, even when in Atrophy Aura's range.
Static Link to the maximum and burst him down from the bonus damages, combine with the armor reduction from 
Eye of the Storm
* Underlord is a slow and low mobility hero, and cannot outrun Razor's high movement speed, easily for Razor to absorb his damage with
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.
*