I've been thinking of an idea of a Magic War in Coreline. Basically, the traditions and laws of different spellcasters are often contradictory. For instance, the Laws of Magic of the White Council state "Thou Shalt Not Invade the Mind of Another," so what happens when a Warden captures or kills a legimens? After enough of these incidents, I suggest a brief, but devastating war results, leading to the various magical authorities coming to some kind of accomodation.