Cleanse - This effect instantly removes 1+ debuff(s) from the target ally.
Type: effect - Category: Status Effect
See also: | 
Buff Steal | 
Cleanse | 
Debuff Transfer | 
Parry | 
Purge | Cleanse (self)
Cleanse is the ability to remove one or more negative status effects, the so called Debuffs, from self and allies. Most Healers have this ability. It happens instantly with an animation. When there are stacked debuffs Cleanse removes the whole stack of that debuff.
A few Heroes have the ability to auto cleanse debuffs from themselves, see Cleanse (self).
Important: Some hero Abilities have a 
Heal and Cleanse component, such as
Ember Sanguine's Cauterize
- Archangel Emily's Cleansing Wave
- Yasmin Bloom's Cure Wounds
to name a few. The order in which Heal and Cleanse occure is important when the ally suffers from 
Wounded, 
Nerve Damage, or 
Diseased, or a similar heal-blocking debuff.
The following example describes the consequences of the order:
Because 
Ember Sanguine trys to heal first, Wounded, Nerve Damage will block the use her 
Cauterize and she can't help! In case Diseased she only will heal with half power because of the disease and then remove the debuff. The target will not have full health.
Archangel Emily's 
Cleansing Wave has the same problem. Wounded will block the use of her Ability for the wounded ally. But she can target any other ally because Cleansing Wave affects the whole team. (That selected ally must not be Wounded, of course.) If Emily targets a not wounded ally, her team will be healed except the wounded ones. Then the debuff is removed. But the wounded target will not have gained full health!
Yasmin Bloom can remove 1 or 2 buffs with her 
Cure Wounds first and then heal. If Wounded (or any other heal blocking debuff) is removed then the target will gain full heal power. The ally can have full health again! (Skill increases the amount of heal.)
Tip: 
Cleansing Regeneration is a buff that can remove debuffs as well.
Debuff Transfer is another way to get rid of unwanted debuffs.
Heroes
The following heroes can inflict/apply Cleanse:
Cleansing Wave (Special Attack): Recover health split between all allies and cleanses all debuffs on all allies.
Lay on Hands (Special Attack): Cleanses all debuffs and heals an ally. At level 61+, cleanses all debuffs, fully heals an ally, and buffs their DEF.
Nevermore (Trait): On death, Craw heals the team and cleanses Debuffs on them equal to the number of Souls +1.
Cleansing Aura (Trait): If the Hero can act at the end of the round, cleanses 1 Debuff on all allies.
Cauterize (Special Attack): Heals target ally and cleanses all debuffs on them. If targeted on an enemy, ranged fire attack that purges all buffs on hit. On killing blow or targeting a corpse, the corpse is removed. Ignores Taunt when targeting.
Epic Scourge Hide III (Trait): Cleanses 3 Debuffs on all Demon and Fire allies at the start of this Hero's turn.
Cleansing Aura (Trait): If the Hero can act at the end of the round, cleanses 1 Debuff on all allies.
Growth Swell (Special Attack): Ranged Water attack on all enemies. Purges two buffs from enemies, cleanses one debuff from all allies, and Grows allied Plants.
Algae Wash (Special Attack): Recovers health split between all allies and cleanses all debuffs. Grows allied Plants and Water allies become Plants. Starts Powered.
Phoenix Rising (Special Attack): Heals and cleanses all allies, and grants team Phoenix Feather to prevent their corpses from being removed, lasting 3 turns.
Shadow Purge (Trait): Purge a debuff on the lowest DEF Hero after each turn. If there are no debuffs on that Hero add 50% +DEF for 3 turns.
Cure Wounds (Special Attack): [One/two] debuff(s) is/are removed from selected target, followed by a heal for [117% SKL]. Upgrading increases the amount healed. Amount of debuffs removed depends on the rank (I/II) of this trait.
Safe Haven (Special Attack): Cleanses all debuffs from target ally and grants them Invincibility for 1 turn.