Enlist the Dead

Enchant swamp you control Suspend 1—{b} Haunt (When this aura is put into a graveyard from play, exile it haunting target creature.) When this aura enters or the creature it haunts dies, create a 2/2 black Zombie creature token. At the beginning of your upkeep, if you control no zombies or this card haunts a creature, you lose 1 life.