Cleanse

แม่แบบ:Spell data Cleanse

**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

* Cleanse **Cleanse** will remove any and all of the following effects: blind, charm, flee, slow, polymorph, silence, root (sometimes called Entangle, Snare or Immobilize), stun and taunt, and damage-over-time effects.
* Cleanse **Cleanse** will provide 3 seconds of 65% crowd control reduction after activation. This stacks multiplicatively with other sources, such as Tenacity and champion abilities.
	+ This crowd control reduction will have no effect on additional Ignite Ignites but will reduce the duration of movement speed slows from additional Exhaust Exhausts.
* Cleanse **Cleanse** has no effect on Suppression, knockup, knockback, pull, and self crowd control. This is true for both the removal and reduction effects.
* Cleanse **Cleanse** will remove all effects contained within the crowd control debuff.
	+ For example, it will remove the following attack speed slows: Glacial Storm Glacial Storm, Wither Wither, Ice Blast Ice Blast, Absolute Zero Absolute Zero, Warden's Mail Warden's Mail and Randuin's Omen Randuin's Omen.
	+ ไฟล์:TryndamereSquare.png Tryndamere's Mocking Shout Mocking Shout is an example of an ability where the two parts are separate debuffs.

## Notes

* The cooldown of this spell can be reduced by the Insight Insight mastery or by Ionian Boots of Lucidity Ionian Boots of Lucidity.

แม่แบบ:Summoner Spell Cooldown table

## Trivia

* The tooltip previously stated that Cleanse **Cleanse** was able to remove the *Sleep* debuff, though no such effect has ever existed in the game.
* Cleanse **Cleanse** was named **Boost up** until V0.9.22.15.
* Prior to V3.13, Ground Slam Ground Slam and Barrel Roll 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 **Cleanse** did not remove.

## Patch History

**V5.18:**

* Now removes Challenging Smite 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 Teleport.

**V1.0.0.129:**

* Now cleanses summoner spell debuffs such as Exhaust Exhaust's movement speed and damage reduction and Ignite 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:**

* Can now remove Exhaust Exhaust.

**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:**

* Can now remove Ignite Ignite.

**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 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 Frost Shot or Toxic Shot 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.

cs:Cleanse
de:Läuterung
es:Purificación
fr:Purge
pl:Oczyszczenie
zh:淨化