Muylari
Muylari (Erlini: "The Watcher (Of All)") was a man cursed with immortality after he and his wife were saved from being eaten by a dark rider. He owed his life to his new master, and had to return as his servant after his wife passed away. Muylari was forced to oversee the plundering of silver mines in what was later called the Lysierian Hills, far to the north-west near Darkstone Bay in northern Jontara. He used sorcery in the form of "forget" and other mind destruction spells to make the locals fail to understand what was happening to them.
Unfortunately, while mining in what was once known as Silver Valley, they awakened a powerful extra-planar entity that was dormant deep underground. The equines of the valley had long been rumored to have kept the thing at bay, but now enslaved, were unable to stop it from breaking free and conquering the valley. They were all cursed with undeath, and Muylari fled, only to suffer for thousands of years.
While the valley was still present in its cursed state when Selias Jodame visited in the early 6000s Second Era, it would become unstable and shifted between time and space until it anchored under the necropolis of Bandur Etrevion a few hundred miles to the south-west. Adventurers witnessed the equines fly up and battle the monstrosity, in spite of their undeath, which resembled a flying serpent with arms and wings. These Terrorite demons frequently served as lieutenants of Ordainers, and were known for tearing into other realities unexpectedly, knocking out whoever they ensnared with their sleep poison. Muylari was never seen or heard from again.