Calciform Cairns
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, Calciform Cairns deals 1 damage to you.

Morph WB (You may cast this face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

Mark Grant West