The Grand Grimoire is a book that describes all magic spells in great detail, including what magic gems need to be used for a specific spell.
In order for a witch to cast a magic spell, two things are needed:
- They need to posses a Talea Magica.
- They need to insert the correct magical gem in the Talea Magica.
After these conditions have been met, a witch may cast a spell by reciting the correct incantation.
The conditions above, however, do not apply to the Great Witch Bezella, who can freely use any magic without even possessing a Talea Magica.