Dota 2 Wiki
Nullifier icon.png
A dangerous weapon pilfered from an inverse dimension.
Bought From
Active Nullify
Bonus [?] +6 Health Regeneration
+8 Armor
+80 Attack Damage
Disassemble? No
Alert allies? No
Nullifier (4725)Components2.png
Sacred Relic (3750)
Helm of Iron Will (975)

The Nullifier is an item purchasable at the Main Shop, under Weapons. However, it requires an item from the Secret Shop to be completed.


Dispels the target and applies a debuff for 5 seconds. Continuously dispels the target. Anytime the target is attacked, it will be slowed by 80% for 0.5 seconds.
Cast Range: 900
Move Speed Slow: 80%
Slow Duration: 0.5
Duration: 5
Cooldown: 11
Mana: 75
Does not pierce spell immunity. Continuous dispel persists if debuff was placed before spell immunity.
Debuff modifier_item_nullifier_mute: Dispellable with death only.
Debuff modifier_item_nullifier_slow: Dispellable with any dispel.


  • The projectile travels at a speed of 1100.
  • Applies a basic dispel in 0.2 second intervals, starting immediately as the debuff is applied, resulting in 25 dispel instances.
  • Nullifier first applies the dispel, then the debuff.
  • The slow immediately triggers on the target upon projectile hit as well, so that it gets slowed on hit.
    • When the target already has the Nullify debuff, refreshing it with a new cast does not trigger the slow.
  • After that, the slow triggers on every successful attack hitting the target. This means missed attacks do not trigger it.
    • The slow does not trigger when the target turns ethereal before attack projectiles hit it.
  • The slow has no trigger cooldown, so that the target can get slowed for the whole duration if it gets hit by an attack at least once every 0.5 seconds.
  • Can be cast on invulnerable units, applying the dispel and the debuff if the invulnerability can be dispelled.
    • However, if the invulnerability cannot be dispelled, the debuff cannot be applied, but can be refreshed, if already debuffed.
  • Despite the internal modification's name. Nullifier does not mute the target.

Recommended Heroes[]

Arc Warden icon.png
  • Arc Warden's natural high attack speed and low attack damage synergize very well with Nullifier's bonus damage, the Tempest Double also benefits fully from this damage. He also benefits greatly from the bonus armor, since he has little agility growth.
Broodmother icon.png
  • Her Broodmother Spiderling icon.png Spiderling and Unknown Unit icon.png Spiderite will continue to slow the target non-stop.
  • Nullifies all the benefits of escape items that supports usually build against your hero.
Clinkz icon.png
  • Nullify combined with Strafe will trigger the slow with almost no interruptions.
Faceless Void icon.png
Juggernaut icon.png
Lifestealer icon.png
  • The lack of ranged slow without Aghanim's Shard icon.png Aghanim's Shard can be substituted with Nullifier, while still increasing Lifestealer's lower than average attack damage to match his high attack speed.
  • Lifestealer's sole reliance on auto-attacks to deal consistent damage means Ghost Scepter icon.png Ghost Scepter and Ethereal Blade icon.png Ethereal Blade will be a key counter to your hero. Nullifier can counter these items back, ensuring you deal the damage you need in fights and ganks.
Riki icon.png
Slark icon.png
  • Slark's fast attack speed keeps Nullified enemies slowed, and makes it harder for targets to escape after Pounce ends.
Troll Warlord icon.png
  • Troll Warlord's high attack speed will guarantee many procs of slow on Nullifed enemies.
  • Nullifier disables counter items against Troll, such as Ghost Scepter icon.png Ghost Scepter or Ethereal Blade icon.png Ethereal Blade.
Venomancer icon.png
  • Venomancer slows keeps Nullified enemies slowed, and makes it harder for targets to escape.
Viper icon.png
  • Viper's slowing debuff keeps Nullified enemies permanently slowed and makes it harder for targets to escape.
Visage icon.png
  • Visage's Familiars can continually attack enemies, causing a non-stop slow.


Items Synergy[]


  • Because this item has a short range and slow projectile speed, it is easier to land from a melee hero with a Blink Dagger icon.png Blink Dagger, Shadow Blade icon.png Shadow Blade or ability to close the distance.
  • A ranged hero may opt for a Scythe of Vyse icon.png Scythe of Vyse especially if they are an Intelligence hero. Note that Hex is dispellable with strong dispels.
  • Use Nullifier on heroes with defensive items like Glimmer Cape icon.png Glimmer Cape, Eul's Scepter of Divinity icon.png Eul's Scepter of Divinity and Ghost Scepter icon.png Ghost Scepter.
  • Since Force Staff icon.png Force Staff is dispellable, Nullifier will stop enemy heroes after they have been pushed a very short distance.
  • Use it on heroes that use dispellable Buffs on themselves to escape or deal/prevent damage like Windrun and Flame Guard.
  • Use it on heroes with illusions to keep track of the real hero.
  • Nullifier's active is one of the very few debuffs that cannot be dispelled at all, making it useful against abilities with strong dispels, such as Dark Pact, Press the Attack, and Aphotic Shield.


Recent Changes[]

Main Article: Nullifier/Changelogs
  • Increased Helm of Iron Will icon.png Helm of Iron Will cost from 950 Gold to 975 Gold (total cost increases from 4700 Gold to 4725 Gold).
  • Item cost changes:
  • Increased Nullify projectile speed from 1000 to 1100.