The sixth season of Winx Club, known on Nickelodeon as Winx Club: Bloomix, focuses mainly on the Trix allying with Selina, a young witch from Earth who has just enrolled at Cloud Tower as a freshman student, and who is an old childhood best friend of Bloom's. The Winx must earn two new fairy transformations: Bloomix (which is derived from Bloom's almighty Dragon Fire powers), and Mythix to lock the Legendarium book once and for all. In order to do so, they must also find Eldora, the fairy godmother, who, like Bloom, has quite a close connection with Selina, and the only one who knows how to seal the Legendarium for eternity.