Darkslick Flagstones
Land-Plains Swamp (Rare)

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

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

WB: Darkslick Flagstones becomes a 2/1 black and white Skeleton creature until end of turn. It's still a land.

Kev Sweet