When Scrub of the Burnwillows enters the battlefield, return a land you control to its owner's hand.

: Add  to your mana pool. Activate this ability only if you control a Swamp.

: Add  to your mana pool. Activate this ability only if you control a Mountain.

: Scrub of the Burnwillows becomes a 2/2 black Wizard creature until end of turn. It's still a land.