Flagstones Tomb
Land-Plains Swamp (Rare)

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

Flagstones Tomb enters the battlefield tapped.

W, Tap, Sacrifice Flagstones Tomb: Prevent all combat damage that would be dealt this turn.

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

Christopher Briclot