Decomposition

This enchantment remains attached to enchanted creature even when it is in your graveyard.
When enchanted creature dies, return it to the battlefield tapped as 2/2 black zombie creature
with "Whenever this creature dies, return it to the battlefield as a 2/2 black skeleton creature with
first strike and "Whenever this creature dies,
return it to the battlefield tapped as a 2/2 black
spirit creature with first strike and flying.""
Flesh is futility.