Copperline Cavern
Land-Swamp Forest (Rare)

(Tap: Add B or G to your mana pool.)

Copperline Cavern enters the battlefield tapped unless you pay 1 life.

1GG, Tap: Put a +1/+1 counter on target creature.

Tap, Sacrifice a Swamp: Add BB to your mana pool.

Jason Chippy