Verdant Creek
Land-Forest Island (Rare)

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

When Verdant Creek enters the battlefield, sacrifice it unless you pay U.

GG, Tap, Sacrifice Verdant Creek: Destroy target artifact.

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

Mark Avon