Unstable Barrens
Land (Rare)

Whenever Unstable Barrens becomes tapped, it deals 1 damage to you.

Tap: Add B or R to your mana pool.

Tap: Add 2 to your mana pool. Put Unstable Barrens on top of your library.

BR: Unstable Barrens becomes a 2/1 red and black Elemental creature until end of turn. It's still a land.

Chippy Tedin