Steppe Mire
Land-Plains Swamp (Rare)

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

When Steppe Mire enters the battlefield, sacrifice it unless you pay 3 life.

2, Tap: Target land becomes a 3/3 white Kor creature until end of turn. It's still a land.

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

Allan Staples