Tranquil Shelter
Land-Plains Island (Rare)

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

When Tranquil Shelter enters the battlefield, return a land you control to its owner's hand.

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

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

Douglas Moeller