Animate Dead

Enchant creature card in a graveyard.
When Animate Dead enter the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put into 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 battelfied, that's creature controller sacrifice it
Enchanted creature gets -1/-0.