Absolver Thrull

Haunt is a triggered ability. “Haunt” on a permanent means “When this permanent is put into a graveyard from the battlefield, exile it haunting target creature.” “Haunt” on an instant or sorcery spell means “When this spell is put into a graveyard during its resolution, exile it haunting target creature.”

Cards that are in the exile zone as the result of a haunt ability “haunt” the creature targeted by that ability. The phrase “creature it haunts” refers to the object targeted by the haunt ability, regardless of whether or not that object is still a creature.

Triggered abilities of cards with haunt that refer to the haunted creature can trigger in the exile zone.