Wooded Atoll
Land (Rare)

When Wooded Atoll enters the battlefield, you lose 1 life unless you reveal a Snake card from your hand.

Tap: Add G to your mana pool. If you played a land this turn, Add U to your mana pool instead.

GU: Wooded Atoll becomes a 2/1 green and blue Leech creature until end of turn. It's still a land.

Ron Nielsen