You are a human warrior

[Terahertz]

I'd go with shamanistic skills as well. Seems like their magic would amplify and synergize with a warrior the most. Earth magic allowing you to make your enemy unsteady, wind allowing you to distract them, fire allowing you to fight from a distance and/or boil your enemy inside their armor and water magic obviously allowing you to replenish yourself after battle.

If I was more limited and had to choose a school I'd go with earth or air magic. Earth would be great for sheer power and like A Chozo mentioned: allows you to control the battlefield, and air would be great for more agile fighting and more subtle advantages.

[Kyux]

Holy I think. Healing is pretty useful, as well as defensive capabilities like absorbs and shields. Also, the odd smite doesn't hurt (or does!)

[Doranian123]

I'd learn the ways of the druid and obtain bear form so I could be a bear with a sword.

But druids are useless

[Lochton]

Hmm...

As a Warrior?

Any frost ability... ^^ You can try to run but not fast enough!