Misty Caldera
Land-Island Mountain (Rare)

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

When Misty Caldera enters the battlefield, you lose 1 life unless you reveal an artifact land card from your hand.

1U: Misty Caldera becomes a 1/1 blue and red Crab creature with flying until end of turn. It's still a land.

Jason Chan