The Treatise of Good Practice (artifact)
This treatise is the guiding book which establishes the generally accepted good standard for the education of Magi in Aversaria under the Mayikrata teaching system. Initially written alongside the Concordial Pact after the Chaos of the Seventh Century, it has since seen nearly 400 official revisions by the Mayikrata over the years, and serves as an incredibly detailed guideline for the science of magic and the best practices in the teachings of it.