Same concept but kinda from the opposite direction, kinda like elder scrolls. Magic used to be super powerful and utterly broken but over time it's degraded for one reason or another some things and groups still have access to the old magic but as a whole it's pretty inaccessible. This is kinda how magic works in Elder Scrolls, the magic of the Dawn Era and Merithic Era were fucken broken world bending shit that did things like turning Solstheim into an island instead of a peninsula, but the world has since gained too much internal stability or perhaps instability to allow such things all that often, but scratching into that requires getting into Elder Scrolls meta physics which just no.