Treetop Atoll
Land-Forest Island (Rare)

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

Treetop Atoll enters the battlefield tapped unless you sacrifice a nonbasic land.

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

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

Christopher Grant West