[Illumina Drathiran'ar]

I don't think Fighter would work here. If we're talking about spellcasting power, Fighter would be a waste of time unless you want to be able to aim that Staff of the Magi a little better. Hit points are of little consequence- if you play your cards right, you won't need them. Now then. I'm sure someone's going to come along and say something about saving throws that may or may not invalidate my argument, but that's just fine. If we're talking Cleric, I doubt you'd get enough really interesting spells before you have to dual. Now, if you multiclass, now we have something to work with. But my money would be on a Sorceror above a dualclassed Mage any day of the week.