The fire boneworm is made of dead desert-dwelling monks and priests. The insane tangle of bodies is fueled by a hatred of the deity and religion that failed to protect them.faces of the bodies the boneworm formed from press out of the leathery flesh. These faces constantly contort into expressions of madness or rage, and they endlessly cry out twisted hymns and warped prayers to mock those deities they once revered. A boneworm comes into existence when a large monastery located in the depths of a desert suddenly succumbs to a terrible disease known as bonefire. In a few days the disease spreads and all the victims die,The bones of the dead twist together in a terrible braid of bone and dead flesh until it finally formes the monstrous abomination known as the boneworm.