(Volcano Barrens isn't a spell.)
Volcano Barrens enters the battlefield tapped unless you pay .
All creatures have Islandwalk.
: Add to your mana pool.
: Add or to your mana pool. Each opponent gains 1 life.
.
: Add 
to your mana pool.: Add 
or 
to your mana pool. Each opponent gains 1 life.
