Merfolk Crypt
Land-Island Swamp (Rare)

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

Merfolk Crypt enters the battlefield tapped unless you control an enchantment.

U, Tap, Sacrifice Merfolk Crypt: Return target creature you control to its owner's hand.

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

Christopher Grant West