Growth Mire
Land (Rare)

Growth Mire enters the battlefield tapped unless you control two or more lands.

When Growth Mire enters the battlefield, put a land you control on the bottom of its owner's library.

Tap: Add BG to your mana pool.

2G: Growth Mire becomes a 2/2 black and green Elf creature with trample until end of turn. It's still a land.

Christopher Staples