I'll concede on the runes. I got a bit wrapped up in thinking of what types of magic he would need to have some skill in before he could mold raw magic and the things that came to mind are all there. Reading over him again now that I have the sleep no longer fogging my thoughts I can see he may have a bit too much versatility. So the Runes will go and I'll tone down his dispelling as well so he can only dispel his own spells and low level spells by other mages.

EDIT: I have edited my CS to remove the script magic and place a tweak to his dispelling magic