Horizon Flats
Land-Plains Swamp (Rare)

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

When Horizon Flats enters the battlefield, you lose 2 life unless you reveal a Cleric card from your hand.

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

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

Jason Prescott