

Umbra took the form of a dark being, in the shape of a man but with eyes like holes into nothing. Once the sword arrived in Vile's realm, Umbra escaped and cut away some of the Prince's power for itself. However, the sword eventually found itself in the hands of Clavicus Vile. It is unknown if the Champion went through with the prince's request to return the sword, and receive the Masque in return, or if the Champion kept Umbra for themself. Barbas, Vile's Hound, advised the Champion against bringing him the sword, foreseeing that it would bring ruin to the Prince. In 3E 433, Clavicus Vile sent the Champion of Cyrodiil to retrieve the Umbra Sword. She became bloodthirsty, and began calling herself Umbra after the sword. Sometime after the events of 3E 427, the sword was discovered by a Bosmer named Lenwin, from the small settlement of Pell's Gate in the Heartlands of Cyrodiil. The sword came into the possession of Torasa Aram later that year, and was put on display in her museum in Mournhold. At his request, the Nerevarine bested the Orc in mortal combat and claimed the Umbra Sword. The Orc's only desire was to die in battle, but no foe could defeat him. In 3E 427, an Orc warrior who went by the name of his sword, Umbra, was spotted in the mountains outside the settlement of Suran on the island of Vvardenfell. The sword is also known to have the ability to absorb the health and stamina of those it strikes. It has been reported as a black and silver claymore, a jet black longsword and as a black sword emblazoned with red markings. The Umbra Sword has the ability to change shape, but it is always in the form of a bladed weapon. Umbra then slowly takes control of the wielder. The sword took on a life of its own, remaining hidden until a worthy wielder was found. Naenra was executed for her evil creation, but not before she hid the sword. However, Naenra (sometimes accredited with being Sheogorath in disguise) supposedly tricked him, as the piece of Vile's power imbued in the sword became a sentient being which called itself Umbra. Naenra created the sword, but it was unstable, requiring Vile to give the witch a piece of his power to be imbued in the sword in order to stabilize it.

Sometime before 2E 582, the ancient witch Naenra Waerr created the sword at the request of Clavicus Vile, who wanted the sword as a tool of mischief which would send him souls from the mortal realm. The Umbra Sword is a Daedric artifact designed with the sole purpose of the entrapment of souls.
