Moonring Graveyard
Land (Rare)

When Moonring Graveyard enters the battlefield, sacrifice it unless you pay U.

Tap: Add U or B to your mana pool. Moonring Graveyard deals 1 damage to you.

3: Moonring Graveyard becomes a 2/2 black Rogue Cleric creature until end of turn. It's still a land.

Lars Myrfors