Horizon of the Burnwillows enters the battlefield tapped unless you pay .
, : Add to your mana pool.
: Horizon of the Burnwillows becomes a 2/2 white Spirit creature until end of turn. It's still a land.
.
, 
: Add 
to your mana pool., : Add to your mana pool.
: Horizon of the Burnwillows becomes a 2/2 white Spirit creature until end of turn. It's still a land.
