Yather Indaglol was a reclusive mage who stays in a locked, warded room in the back of his tavern.
Yather was trying to perfect a mobile, invisible wardmist spell that was centered on himself at all times. He wanted the spell to never fail and constantly sustain him so he didn't have to eat, sleep, age, or die. He only managed to create a semi-permanent, mobile magical field around himself that duplicated the effects of a light spell at will. It also allowed Yather to regenerate a small amount of health. Strangely, this spell was fed by the soul of an older wizard that existed as a floating, undead skull that could not be turned. The skull could not harm anyone except by talking ceaselessly—which it did to Yather—constantly distracting him from his research.