Forbidding Caves
Land-Plains Swamp (Rare)

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

Forbidding Caves enters the battlefield tapped.

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

1BB, Tap, Sacrifice Forbidding Caves: Target player discards a card.

John Schuler