Yahkem Lyr is a coven of Daedric Magic practitioners on mainland Morrowind. The coven's shaman Fablat Humuk, while secretive, is well respected in the arcane society and knowledgeable about the ways of the Daedra. The coven frequently deals with spirits of the Void and less known planes of Oblivion, and is known to strike deals with them more often than the other cults. Thus, Yahkem Lyr is among the most powerful sects in Morrowind.
Fyhrrec the Sojourner, Sapiarch of Conjuration Arts from the town of Dusk, conversed with Yahkem Lyr's shaman Fablat Humuk, who in turn revealed the ritual of acquiring permission to draw powers from Oblivion. The Sapiarch became a practitioner afterwards, and was taught Oblivion Step.
The only known ranks within Yahkem Lyr are: