(: Add or to your mana pool.)
When Green Catacomb enters the battlefield, sacrifice it unless you pay 3 life.
, , Sacrifice Green Catacomb: Destroy target enchantment.
, , Pay 1 life: Put a 1/1 black Specter creature token onto the battlefield.
: Add 
or 
to your mana pool.), , Sacrifice Green Catacomb: Destroy target enchantment., , Pay 1 life: Put a 1/1 black Specter creature token onto the battlefield.
