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Cleanse

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

Strategy

Notes

Summoner Spell Cooldown Reduction Flash.png F Teleport.png T Clarity.png C Heal.png H Cleanse.png C Exhaust.png E Ignite.png I Barrier.png B Ghost.png G Smite.png S (recharge) Clairvoyance.png C Mark.png M
Without any 0% 300s 300s 240s 210s 180s 75s 60s 80s
Ionian Boots of Lucidity item.png Ionian Boots of Lucidity 10% 270s 270s 216s 189s 162s 67.5s 54s N/A
Summoner's Insight mastery s4.png Insight 15% 255s 255s 204s 178.5s 153s 63.75s 51s N/A
Ionian Boots of Lucidity item.png Ionian Boots of Lucidity + Summoner's Insight mastery s4.png Insight 25% 225s 225s 180s 157.5s 135s 56.25s 45s N/A
ARAM aura 40% 180s N/A 144s 126s 108s N/A N/A 48s
ARAM aura + Summoner's Insight mastery s4.png Insight 49% 153s N/A 122.4s 107.1s 91.8s N/A N/A 40.8s
ARAM aura + Ionian Boots of Lucidity item.png Ionian Boots of Lucidity 50% 150s N/A 120s 105s 90s N/A N/A 40s
ARAM aura + Ionian Boots of Lucidity item.png Ionian Boots of Lucidity + Summoner's Insight mastery s4.png Insight 59% 123s N/A 98.4s 86.1s 73.8s N/A N/A 32.8s

Trivia

  • The tooltip previously stated that Cleanse.png Cleanse was able to remove the Sleep debuff, though no such effect has ever existed in the game.
  • Cleanse.png Cleanse was named Boost up until V0.9.22.15.
  • Prior to V3.13, Ground Slam.png Ground Slam and Barrel Roll.png Barrel Roll were the only attack speed slows in the game not connected to a movement speed slow and so were the only attack speed slows that Cleanse.png Cleanse did not remove.


Patch History

V5.18:

  • Now removes Challenging Smite.png Challenge / fixed a bug where Cleanse wasn't removing all Summoner Spell debuffs.

V4.1:

  • Icon updated.

V1.0.0.139:

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

V1.0.0.129:

  • 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.

V1.0.0.125:

  • Removed the word "sleeps" from tooltip.

V1.0.0.104:

V1.0.0.99:

  • Now removes silence and blind effects.

V1.0.0.97:

  • Can now be used without breaking stealth.

V1.0.0.96:

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

V1.0.0.86:

  • Cooldown increased to 150 seconds from 120.

V1.0.0.72:

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 seconds from 100.
  • Willpower (mastery): Cooldown reduction reduced to 20 seconds from 30.

V1.0.0.61:

  • Now provides 2 seconds of debuff immunity after cast.

V0.9.25.24:

  • Cooldown reduced to 100 seconds from 120.

V0.9.22.16:

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

V0.9.22.15: Remake

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

V0.9.22.7:

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

July 10, 2009 Patch:

  • Duration reduced to 15 seconds from 30.

June 26, 2009 Patch:

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

  • Initial cooldown reduced to 0, and cooldown reduced to 180 seconds from 480.

Alpha Week 4:

  • Cooldown reduced to 360 seconds from 480.

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