Sorry for the delay, was composing spells for another RP. Anyway, two of the Nine Sages are PC Characters, and, yes, it's in the same universe essentially. And, yes, I did.

And, no, Hexes haven't been used in the RP before. Usually, though, a Hex is basically Any Sphere + Law, if by Hex, you mean a negative lasting effect, and all Schools have negative effects.