Verdant Chamber
Land-Forest Island (Rare)

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

When Verdant Chamber enters the battlefield, you lose 1 life unless you reveal a Green card from your hand.

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

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

Steve Briclot