Animate Death

Enchant creature card in a graveyard
When Animate Dead enters the battlefield, if it's
on the battlefield, it loses "enchant creature card
in a graveyard" and gains "enchant
creature put onto the battlefield with
Animate Dead." Return enchanted creature to the battlefield under your control and attach
Animate Dead to it. When Animate Dead leaves
the battlefield, that creature's controller sacrifices
it.
Enchanted creature gets -{1}/{0}