Sparkling Shrine
Land-Plains Island (Rare)

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

When Sparkling Shrine enters the battlefield, sacrifice it unless you pay U.

2U, Tap: Draw a card, then discard a card.

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

Douglas Critchlow