Krosan Marsh
Land-Forest Island (Rare)

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

Krosan Marsh enters the battlefield tapped unless you pay 1.

1GG, Tap: Put a +1/+1 counter on target creature.

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

Aleksi Prescott