, alt. Urthekau
, was the ancient Egyptian personification of supernatural powers, weret hekau
meaning "she who is rich in magic" or "she who is great in spells" or the like. This power was one of the inherent qualities of the Crowns of Egypt
. As goddess of the crowns she was a snake or a lion-headed woman and dwelt in the state sanctuary.
Werethekau was an epithet frequently conferred on Isis, , Sekhmet, Mut and others.