Magister Jor'keth was the leader of the three undead Tsol'dasi that composed the Magisterion. He resided in the Tower Granniftor in the Underworld. His combative magic focused primarily on fire and the summoning thereof - fireballs, pillars of flame, and the like.
Jor'keth, along with the other two Magisters, Dominar and Pryla'ket, vanished without a trace after a failed attempt to overthrow King Ugrach. Failing to wrestle control of the Soulbleed Nexus from the Lord of the Undead, the Magisterion were weakened considerably and disintegrated into dust, their citadels abandoned.