"She made the weapon, but it was unstable, and she told the prince that he would have to imbue it with some of his own power to make it whole and communicate with it on the mortal plane. Vile gave her the power she asked for."
Nirai Sathil to Prince Attrebus[src]

Naenra Waerr was an ancient witch who enchanted the infamous sword Umbra for the sole purpose to entrap souls. She was eventually executed for her creation, but not before she was able to hide the sword.[1] Some people speculate that Naenra Waerr was in fact Sheogorath in disguise.[OOG 1]


Clavicus Vile wanted a weapon that would send him souls. He could not find a smith who could craft such sword, but Vile eventually came across Naenra Waerr. Naenra crafted the sword, but it was unstable. She told the Prince the he had to imbue the sword with part of his own power so that it could be whole and communicate with it on the mortal plane. Vile agreed to do what the witch asked, but she tricked him. The sword would possess its owner over time. The sword ended up being independent from Vile, a sentient being.[OOG 1]



Notice: The following are out-of-game references. They are not found in any in-game books, but can still be considered part of The Elder Scrolls lore and are included for completeness.
  1. 1.0 1.1 An Elder Scrolls Novel: Lord of Souls, part two chapter thirteen