Gloomfire lanterns are used by those for whom subterfuge is a necessity. Unsavoury characters who skulk and scurry in darkness. They should, however be used with care. If not properly contained, a gloomfire can spread, leaving behind an impenetrable blackness that can take centuries to dissipate. The dark city of Ghulk is testament to this power. Who knows what lowly creatures roam in obscurity through its streets.