Thasmudyan

Thasmudyan was a god of the undead and undeath and a baatezu lord worshiped since time immemorial on the Zakharan island of Sahu.

Cult of Worms
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. Members of the cult secretly spread throughout many nearby lands, trying to get into positions of power.