Moor Reef
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, Moor Reef deals 1 damage to you.

BB, Tap, Sacrifice Moor Reef: Put a -1/-1 counter on target creature.

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

Eric Myrfors