Magical Foundation

A magical theory engraved into the world. It’s strength is greatly influenced by the faith and the collective unconscious of the people.
As a Mystery propagates, it loses power. However, the reason they become more stable as knowledge about them spreads, though it may seem contradictory at first glance, is because of this system of Magical Foundations.
In the present day, the most widespread and most powerful Magical Foundation is the “Teachings of God,” used by the Holy Church.
Of course, there also exist families who develop magical formulas entirely independent of such Foundations, and weirdos like Flat who “build an entirely new formula from scratch every time.”

Lord El-Melloi II Case Files material: Lord El-Melloi II Case Files Glossary