(Arid of the Burnwillows isn't a spell.)
Arid of the Burnwillows enters the battlefield tapped.
Sacrifice a land: You gain 1 life.
: Add to your mana pool. Return Arid of the Burnwillows to its owner's hand.
: Add 
to your mana pool. Return Arid of the Burnwillows to its owner's hand.
