At some point she joined the Order of the Black Worm under Mannimarco when he came to Cyrodiil. Acting as one of his lieutenants, she was chosen to lead the first assault against the Mages during the Attack on the Mages Guild.
She and a large group of Necromancers stormed Wellspring Grove, the source of the Mages' staves, and killed its two attendants, taking control of the place. Their rule would not last long; the eventual Champion of the Mages Guild arrived at Wellspring seeking wood for a staff, and beheld the Necromancers' desecration.
The Champion fought into the Grove and there was confronted by Noveni, who threatened the Champion with a horrid, Necromancy-induced fate before being slain by the Champion.
"What have we here? Another plaything? You'll dance for me, little one, yes, you will. I'll make your corpse dance, and then tear itself apart!"