One thing about magic, it's dangerous. Not just for those targeted with it, but also those who wield it. Especially when magic is pushed to the limit of its casters power.
I want to add that level of danger back into anarchy from its roots in the core rules.
When casting a spell players may roll up to three push dice. The push dice should either be rolled separately or a different color than the other dice.
Each 5 or 6 adds an additional success. Each 1 rolled on a push dice does one point of stun damage to the caster. If the spell casting roll fails then the damage is physical rather than stun.