Underground Marsh
Land-Island Swamp (Rare)

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

At the beginning of your end step, if you didn't cast any spells this turn, Underground Marsh deals 1 damage to you.

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

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

Greg Moeller