(Bog Springs isn't a spell.)
Bog Springs enters the battlefield tapped.
Discard two cards: Put a 2/2 black Zombie creature token onto the battlefield.
: 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.
