Enchant creature card in a graveyard

When Raising of Viserion 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 Raising of Viserion." Return enchanted creature card to the battlefield under your control and attach Raising of Viserion to it. When Raising of Viserion leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.