The Book of Secrets

"'This ancient volume outlines the secrets of Heraldic magic. It's a treasure that's never left us.' ~ Elder" The Book of Secrets (also The Book of Secret Seals and the Book of Secret Signs), is an ancient tome detailing the most powerful spells known to Heraldry Arts, and an underlying explanation for how Heraldry operates. The book is considered highly dangerous in the wrong hands, and is kept hidden by the elders of Mars.

The book is not acquired nor actually read by the party characters.

Story
When Claude, Rena, and Celine visit the town of Mars, they learn that bandits had taken the children of Mars hostage. They demand 50,000 Fol and the book in return for the children. The elders, while justifiably distraught, consider giving up the book to be unthinkable, as such power in the hands of criminals would be disastrous for all of Expel.