Magic book Series idea
"A book series about a school that teaches magic and how to hide it from the world, along with manipulating history to remove knowledge of magic. (Because it is revealed later that performing it without the proper traits is problematic due to it physically consuming its users if they don't have the actual capacity to store the energy. So, if you get people to perform a ritual together without having proper qualifications, you'd get a virtual explosion of blood, guts, and gore.)"