Thasmudyan was an evil god of the undead and undeath, and a baatezu lord, worshiped since time immemorial on the Zakharan island of Sahu.[4][1]

Cult of WormsEdit

Thasmudyan's followers called themselves the Cult of Worms and were led by his Chosen and high priestess, the lich Vermissa, from her long-time magical prison on Sahu. In the early 1400s DR,[note 1] members of the cult secretly spread throughout many nearby lands, trying to get into positions of power.[4][5]

Places of worshipEdit

The Garden of Eternity, an enormous cave deep within the Vishap's Spine mountains of Sahu, contained a palace with a huge chamber dedicated as a cathedral to Thasmudyan.[6]


The original worshipers of Thasmudyan were the inhabitants of the strange, mushroom-shaped metal towers found on the shores of Sahu and in Rog'osto.[1][7] Their origin was a mystery to most in 1367 DR,[note 2] but they were actually built by a civilization of the sea-dwelling locathah. In a war these areas were magically raised from the waters, forcing the locathah to abandon them.[8][note 3]

Emigrants from the Geomancer's empire of Kadar found the remnants of Thasmudyan's cult on Sahu and revived it. When the cult's leader Vermissa was imprisoned and lost from sight after a conflict with Necromancer King Uruk, the worship of the King of Worms dwindled in importance.[1]

After the fall of the dynasty of Necromancer Kings and general decline of civilization on Sahu, the Cult of Worms transformed into a secret society, with the goal to first and foremost free Vermissa as was prophesied in the Nycoptic Manuscripts.[1][5][4]



  1. The "Isle of the Necromancer Kings" is a mini-setting within the core source The Complete Book of Necromancers. It is not officially dated but linked to and set some forty years after the Al-Qadim setting, which itself is assumed to have 1367 DR as current date within this wiki.
  2. Canon material does not provide dating for the Al-Qadim campaign setting. For the purposes of this wiki only, the current date for Al-Qadim products is assumed to be 1367 DR.
  3. This is the case if both sources are assumed to be accurate. It is not clear if this was intended by the authors, as it is in contrast to the behavior of the locathah as described elsewhere.



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