Grimoire (Airnejax)

A Grimorie「魔道書グリモワール Gurimowāru」is a magical book that many mages use to cast spells in a variety of ways and that they use to enhance their own magical abilities.

Although is mostly used to for storing magical spells and enhancing a mage's already magical abilities, they can be used to store other things that mages want to write down. Only the user can see what they write in the grimoire, like invisible ink. Grimoires have multiple uses that any mage can use depending on the mages creativity and magical abilities. For a mage to use a grimoire, they must have magical power of their own.

Overview
Grimoires are magical items that greatly enhance the user's ability to use magic. They also serve as a written record for all of a user's spells. They are considered to be powerful tools with perplexing knowledge and powerful magic spells written in them. As the owner of a grimoire grows, new magic spells are inscribed into the book. They grimoire can hold an unlimited amount of magical spells that the mage can call on at any time. Grimoires never run out of pages. When the use dies, their grimoire will break down into particles of eternano and disappear. Anyone can use a grimoire, but because grimoires are connected to their owners, mages cannot use another's grimoire. However, they are usually granted to the mage during a Grimoire Ceremony.

History
No one really knows when the first grimoires were first created, but we do know that the first ever magical grimoire was created when the first ever magic was ever created. But, The first grimoire ever created was used as a model for a way to keep one's magical power under control and used as a guide book for honing one's talents. Ever since then, it has been wielded as a guide on how magic should be used in the most effective manners. Just like magical staffs, mostly every magician used grimoires to wield their magic.