Peat Heights
Land-Plains Swamp (Rare)

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

At the beginning of your end step, if you didn't cast any spells this turn, Peat Heights deals 1 damage to you.

B, Tap, Pay 1 life: Put a 1/1 black Specter creature token onto the battlefield.

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

James Sweet