what is a cleanse
1 Cleanse will remove all effects contained within the crowd control debuff. 2  For example, it will remove the following attack speed slows: Glacial Storm, Wither, Ice Blast, Absolute Zero, Warden's Mail and Randuin's Omen. 3  Tryndamere's Mocking Shout is an example of an ability where the two parts are separate debuffs.