The Exoren had a huge part during the first season. It was first discovered by Matilda when she sneaked into Grachi's house. She later stole it and start using it, thus awakening her powers. Grachi discovered the book via Cussy, her magic tutor. Throughout the season, Grachi and Matilda kept on fighting over the book. The book was completely destroyed when all of its power was used against Mrs. Director.
Grachi found a page from the Exoren in one episode. It contained the spell on how to get rid of the clones that Grachi made.
- The book is unbreakable physically, but breakable magically.