Flat Barrens
Land (Rare)

Flat Barrens enters the battlefield tapped unless you reveal a creature card from your hand.

1, Tap: Add WW, WB or BB to your mana pool. Flat Barrens deals 1 damage to you.

1W: Flat Barrens becomes a 0/4 white and black Spirit creature with defender until end of turn. It's still a land.

Lars Schuler