The Duosabers consumed the souls of those struck down by them, the hatred fueling their obscene powers. Though the ghostly mist that emanated from the blades was fatal to their wielder, Segnos would not succumb to their influence so easily. His own hatred, derived from a life of persecution, absorbed and negated the malice of the Duosabers.
In Greek mythology, a miasma (ancient Greek "pollution") is a contagious power that has an independent life of its own. Until purged by the sacrificial death of the wrongdoer, society would be chronically infected by catastrophe.