Calciform Ruins
Land-Plains Island (Rare)

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

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

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

U, Tap, Sacrifice Calciform Ruins: Return target creature you control to its owner's hand.

Aleksi Moeller