The Trix in season 7

In the last episode a powerful wizard named Argent had broke the Trix, Valtor and Darker from their prison.

The Winx walk to the biblioteca and take a sede, sedile at a table. Tecna starts flipping through the pages.

Stella: What does it say Tecna?
Tecna: It's interesting really this book is written in a secret code from Zenith.
Musa: Just tell us what it says!
Tecna: Desairix is a powerful transformation and can be used on land and in water. Was first discovered when a fairy was attacked and uncovered the secrets of Desairix.
Bloom: When was the book written Tecna? the fairy may still be alive and can help...