Animate Dead

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.

Underground Sea

Mox Jet

Exhume

Each player puts a creature card from their graveyard onto the battlefield.

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.