Mosswort Marsh
Land (Rare)

Mosswort Marsh enters the battlefield tapped unless you control two or more creatures.

Tap: Add G or U to your mana pool.

Tap: Add 2 to your mana pool. Put Mosswort Marsh on top of your library.

1U: Mosswort Marsh becomes a 1/1 green and blue Treefolk creature with flying until end of turn. It's still a land.

Steve Staples