mages, they make their own food and water, they have ice barrier, chances are most mobs wont break it, frost elemental helps with dps and keeps the mob away from you. 99% of the time you wont take damage at all, there are tons to ways to save and regen mana without eating (most of the time my mage never eats) and high dps output. as well as being able to silence (counter spell) and steal buffs, its a no brainier, not only that, but you could take advantage of the extra ports, to get anywhere quickly.