Rugged Ruins
Land-Swamp Mountain (Rare)

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

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

2, Tap: Target land becomes a 3/3 red Troll creature until end of turn. It's still a land.

BB, Tap, Sacrifice Rugged Ruins: Put a -1/-1 counter on target creature.

Allan Staples