Okay, I just want to put this out there (if it hasn't been said). Automatic Quicken Spell x9. Automatic Silent Spell x3. Automatic Still Spell x3.

I now cast everything up to and including 9th level spells instantly, silently, and quickly.

Spend some time at home with a few Rods of Absorption, and then spam out, like, a million Spheres of Ultimate Destruction. In one round.