Vault Pools
Land-Island Swamp (Rare)

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

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

B, Tap, Pay 1 life: Put a 1/1 black Skeleton Rat creature token onto the battlefield.

U, Tap, Sacrifice Vault Pools: Return target creature you control to its owner's hand.

Steve Walker