Dormant Timberland
Land-Mountain Forest (Rare)

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

When Dormant Timberland enters the battlefield, you lose 1 life unless you reveal a creature card from your hand.

3: Dormant Timberland becomes a 2/2 green Squirrel creature until end of turn. It's still a land.

Greg Moeller