New feat Overcast

[las]

hell feal just think if he does that more then one time per day.

 

[Khorod]

This ability should be either desperation or as an act of last resort. If overcasting by one level is standard for as many as 1/3 the spells per day, its too easy.

If you want to build overcasting into the magic system (ala Wheel of Time) that is something else. It should be a standard part of the system, not a special power gained by a feat.