Barbarian Heights
Land (Rare)

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

Tap: Add R or W to your mana pool. Barbarian Heights deals 1 damage to you.

1W: Barbarian Heights becomes a 0/4 red and white Elemental creature with defender until end of turn. It's still a land.

John Grant West