Abandoned Catacomb
Land-Plains Swamp (Rare)

(Tap: Add W or B to your mana pool.)

When Abandoned Catacomb enters the battlefield, sacrifice it unless you pay B.

W, Tap, Sacrifice Abandoned Catacomb: Prevent all combat damage that would be dealt this turn.

1, Tap: Target land becomes a 2/2 black Rogue creature until end of turn. It's still a land.

John Staples