Effects Removes all disables (excluding Suppression) and summoner spells debuffs affecting your champion and grants 65% crowd control reduction for 3 seconds.
Cooldown 210
Cast range Self
Breaks stealth? No
Level 2
Related mastery Summoner's Resolve Summoner's Resolve
Mastery effect Increases duration of disable reduction by 1 second.

Cleanse.png Cleanse is a 'non-targeted' summoner spell. Its primary function is to remove active crowd control effects, allowing the summoner to continue pursuit or escape.

Strategy 编辑

  • Cleanse has no effect on Suppression, knock-ups, knock-backs, grabs and flings. This is true for both the removal and reduction effects.

Trivia 编辑

  • Previously the tool tip stated that Cleanse was able to remove the Sleep debuff, although no such effect existed in the game.
  • Cleanse was named Boost up until V0.9.22.15.

Patch History 编辑


  • Fixed a bug where it could interrupt Teleport.png Teleport.


  • Now cleanses summoner spell debuffs such as Exhaust.png Exhaust's movement speed and damage reduction and Ignite.png Ignite's damage over time
  • Cooldown increased to 210 seconds from 150 seconds
  • Improved Cleanse no longer reduces cooldown, but now extends the secondary disable reduction buff by 1 second


  • Removed the word "sleeps" from Cleanse.png Cleanse's tooltip.


  • Exhaust.png Exhaust is now properly flagged as a slow + blind and can now be removed by Cleanse.png Cleanse


  • Cleanse.png Cleanse now removes silence and blind effects.


  • Cleanse.png Cleanse can be used without breaking stealth.


  • Cleanse.png Cleanse now only removes crowd controlling effects, silences and blinds. It no longer removes effects such as damaging debuffs or armor/stat debuffs


  • Cleanse.png Cleanse cooldown increased to 150 seconds from 120 seconds.


V1.0.0.63: Remake

  • No longer provides debuff immunity (but still removes debuffs when cast). Provides a 50% duration reduction to stuns, slows, taunts, fears, snares, sleeps and immobilizers for the next 3 seconds.
  • Cooldown increased to 120 from 100.
  • Willpower (mastery): Cooldown reduction reduced to 20 seconds from 30.


  • Cleanse.png Cleanse provides 2 seconds of debuff immunity after cast.


  • Cooldown reduced to 100 from 120.


  • Added the summoner spell particle.
  • No longer stops Requiem.png Requiem.

V0.9.22.15: Remake

  • Cleanse.png Boost renamed to Cleanse.png Cleanse:
    • Removes all debuffs from your champion, can be cast while disabled.
    • Cooldown reduced to 120 from 150.


  • Cooldown increased to 150 from 120.
  • Duration reduced to 12 from 15.

July 10, 2009 Patch:

  • Cleanse.png Boost duration reduced to 15 seconds from 30.

June 26, 2009 Patch:

  • Will Power (mastery): Increases the duration of Cleanse.png Boost by 2 seconds, and reduces the cooldown by 30 seconds.
  • Cleanse.png Boost no longer gets consumed by autoattack abilities like FrostShot.png Frost Shot or 毒性射击.png Toxic Shot.

June 6, 2009 Patch:

  • Gave it the correct buff icon/tooltip.
  • Can now be cast while disabled.

May 29, 2009 Patch:

  • Tooltip fixes.

May 23, 2009 Patch:

  • Now activates a 30 second duration spell shield (90 sec cooldown), also removes any slows/silences/snares currently on the caster.

May 1, 2009 Patch:

  • Cooldown reduced to 90 seconds from 180.
  • Known issue: it doesn't break stuns, fears, or silences.

Alpha Week 5:

  • Cleanse.png Boost initial cooldown reduced to 0, and cooldown reduced to 3 minutes from 8.

Alpha Week 4:

  • Cleanse.png Boost cooldown decreased to 6 minutes from 8.
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