14 base int - mainly stack wits. hot head + savage sortile.
get all the crit chance + wits you can get on gear.
there is a 2 slot amulet somewhere in act 2 socket it with the highest fire runes you have.
once you get power frames and giant runes put them on your fire runes first. 3 int and loads of crit.
in arx you will get a 3 slot amulet at that point you will probably reach 100% crit.
school priority: your choice of ele > scoundrel > huntsman.
use the higher ground!
once you get that 20% crit chance weapon you will feel like a god.
All my spells crit for 3k dmg at lvl 21 - source spells usually one shot everything.
my mage has last rites that damage can crit too =D - so I pain chackled an enemy used living on the edge and next turned revived the dead ally. it crit for 7k piercing damage - way to turn a death into a stunning victory ^_^
thank me later.