Kas Althume is the steward to Prince Peridaen. He is also a wizard for the Fraternity of Blood. Kas poisons Prince Rann to try to put Prince Peridaen on the Casori throne. He also poisons Linden Rathan using a farewell chalice and tortures him for knowledge about the Dragonlords. Kas is killed when Sherrine Coltraine stops a ritual killing of Prince Rann.