The idea seems great but magicka will be less efficient than weapons.
So player use more weapons instead.
Maybe a mod which do the same with weapon could balance that.
Fliggerty can add this in his mod AI overhaul ?
About that you should ask from Fliggerty.
Some suggestions :
Maybe the chance would depend on your magicka skill ?
If somebody wants he can make a patch after asking me. I don
Some effects are hard for player :
- Make people attack you.
- Teleport somewhere.
Thats why I made Staff of Sorcerer. It can shield you from miscast.