Quote Originally Posted by Troacctid View Post
It doesn't matter, because you can't use slots from one class to spontaneously cast spells from another class. Only your archivist spell slots could be used to cast your divine spells.
... except that Rashemi Spirit Magic creates an explicit special case exception to this rule via:
Quote Originally Posted by Rashemi Spirit Magic
...even if it is not on the same spell list as the substituted one.