Enchant creature card in a graveyard
When Animate Dead enters, 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 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.
When you play Animate Dead, choose target creature card in any graveyard. When Animate Dead comes into play, put that creature into play and Animate Dead becomes a creature enchantment that targets the creature. Enchanted creature gets -1/-0. If Animate Dead leaves play, bury the creature.
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