Arcanabula tend to be magic-specific, usually filled with information concerning the research of one or more similar spells. It is essentially a record of the wizard's research to unlock the way a spell is to be cast or a new variation of a spell may be created. Many wizards will have both a 'working' arcanabula which records their progress and failures but then also subject-specific texts which record new variations on pre-existing spells. Once the formulations for a new spell are complete and the wizard has successfully completed their research, the newly created spell can be copied into their 'official' spellbook (grimoire) and /or a book concerning all spell research along a particular theme (school) of magic.
The contents of Arcanabula are often copied over into subject-specific grimoire or spellbooks once full. Arcanabula are often referenced by apprentices to see how a spell or ritual was researched, the mistakes and new discoveries.
Arcanabula's tend to be filled with non-magical writings about magic but may contain a number of minor spells as a reference.
- Alwyn: When Caphar began teaching Medjia to Alwyn, he recorded the teachings and what few spells he had in the back of one of his other notebooks to conceal it.
- Randelfur: Randelfur's most infamous Arcanabula concerns his research into portal magic.