Arilyn
Hero
Ars Magica magic takes some effort to learn but it's more creativity than intelligence I think. You get better at it, and there are a good selection of premade spells you can learn and fire off. Ars Magica wizards are above doing too much "grubby adventuring" anyway. 
You've got your companion characters and grogs for that!

You've got your companion characters and grogs for that!