Of course, at your party's levels, the real question is what happens when a maximized, empowered touch of idiocy hits these PCs...
I tend to fall on the slots are still there, you just have to use spells you CAN cast in them. So the result would likely be lots and lots of magic missiles.
nah, this was more along the lines of the lower level "minion" type caster using Touch of Idiocy to slow down one of the PCs before he gets squashed like a bug, or gets zapped in an AoE spell.
