Animate Dead

Enchant creature card in a graveyard.
When Animate Dead enters the battlefield, it loses
"enchant creature card in a graveyard" and gains
"enchant creature put onto the battlefield with
Animate Dead." Return enchanted creature card
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.