Vault Steppe
Land-Swamp Forest (Rare)

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

When Vault Steppe enters the battlefield, return a land you control to its owner's hand.

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

1G, Tap: You gain 1 life.

John Critchlow