Salt 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, Salt Cairns deals 1 damage to you.

WB: Salt Cairns becomes a 2/1 white and black Soldier creature until end of turn. It's still a land.

Allan Argyle