(Meadow of the Burnwillows isn't a spell.)
Meadow of the Burnwillows enters the battlefield tapped unless you pay 3 life.
All creatures have Islandwalk.
: Add or to your mana pool.
Sacrifice Meadow of the Burnwillows: Add or to your mana pool.
: Add 
or 
to your mana pool. or to your mana pool.
