Glamoril

The Glamoril ("Elvish": "the secret of life") is an artifact of Archmage Shalidor, said to be be kept in Labyrinthian, his "testing ground" (as opposed to his actual home, The Fortress of Ice citadel) in the Tamrielic province of Skyrim.

While stories about the artifact have been around since the First Era, Glamoril's existence has never been confirmed, and neither its purpose nor its function are mentioned in any known account. The College of Winterhold, however, has developed theories based on Shalidor's uncommonly diverse studies, speculating that "the source of life" was perhaps used to enhance some capability of the Archmage, such as unfathomable intelligence or knowledge; or even to give him the ability to "live multiple lifetimes in a short span of time".