When Boiler-Tar Pit enters the battlefield, sacrifice it unless you pay 2 life.
: Add or to your mana pool.
: Add to your mana pool. Put Boiler-Tar Pit on top of your library.
: Return Boiler-Tar Pit to its owner's hand.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Boiler-Tar Pit on top of your library.: Return Boiler-Tar Pit to its owner's hand.
