(Boiler-Bridge isn't a spell.)
When Boiler-Bridge enters the battlefield, sacrifice it unless you pay 1 life.
Attacking creatures you control get +1/+0.
: Add to your mana pool. If you played a land this turn, Add to your mana pool instead.
: Add 
to your mana pool. If you played a land this turn, Add 
to your mana pool instead.
