Misty Timberland
Land (Rare)

Misty Timberland enters the battlefield tapped unless you control an enchantment.

1, Tap: Add UU, UG or GG to your mana pool. Misty Timberland deals 1 damage to you.

2G: Misty Timberland becomes a 2/2 green and blue Fish creature with trample until end of turn. It's still a land.

Allan Chan