Debris Wildwood
Land (Rare)

Debris Wildwood enters the battlefield tapped unless you reveal an artifact creature card from your hand.

Tap: Add G or U to your mana pool.

Put Debris Wildwood on top of your library: Add 1 to your mana pool.

1U: Debris Wildwood becomes a 1/1 green and blue Merfolk creature with flying until end of turn. It's still a land.

Jason Schuler