Growth Caves
Land-Swamp Forest (Rare)

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

When Growth Caves enters the battlefield, sacrifice it unless you pay 1 life.

2, Tap: Target land becomes a 3/3 green Treefolk creature until end of turn. It's still a land.

1, Tap: Target land becomes a 2/2 black Rat Rogue creature until end of turn. It's still a land.

Steve Tedin