"Well, if I knew which school you would be most interested in, this question would be easier. Seeing as that was not deturmined I whall have to endevor to do this by school.
for protection magic, stone skin; conjuration, dimention door; divination, would be scrying; enchantment schools is tough, I might want charm monster; evocation is also tough but for the variety rather then the lack there of, blistering radiance would be quite handy; illusion I would have to choose shadow well to deter some chaser; I hate necromancy. But if I must choose, then fear, once again to deter a chaser."
Capizzio takes a breath for a moment, then continues, "Transmutation school is a really tough school to choose just one spell. that is the hardest due to the variety of applications: voice of the dragon can get you out of a tight fix with no harm done, metal melt has a miriad of uses, Flight of the dragon and wings of air work great together, elemental body, beast shape; displacer form...*sigh* too many good spells to just choose just one."
Capizzio just shrugs in surrender at this time.