Copperline Wastes
Land (Rare)

Copperline Wastes enters the battlefield tapped unless you control two or more creatures.

G, Tap: Add UU to your mana pool.

U, Tap: Add GG to your mana pool.

2G: Copperline Wastes becomes a 2/2 green and blue Leech creature with trample until end of turn. It's still a land.

Lars Avon