Corpse Dance from Tempest (116) is a Rare Instant card.
Illustrator: Brian Snõddy
Rules
Buyback {2} (You may pay an additional {2} as you cast this spell. If you do, put this card into your hand as it resolves.)
Return the top creature card of your graveyard to the battlefield. That creature gains haste until end of turn. Exile it at the beginning of the next end step.
