Copperline Encampment
Land (Rare)

When Copperline Encampment enters the battlefield, you lose 1 life unless you reveal a colorless card from your hand.

G, Tap: Add RR to your mana pool.

R, Tap: Add GG to your mana pool.

RG: Copperline Encampment becomes a 2/1 green and red Elf Treefolk creature until end of turn. It's still a land.

Steve Guay