While Elven Mages have the ability to see the combined might of High Magic, a few choose to specialise in certain areas if they have a gift or talent. Those that channel "Hysh" excel at confronting and banishing Daemons.
In Ulthuan, those who devote their lives to magic are treated with the highest respect and honour. Though each kingdom has its own magical traditions and methods of scholarship, Saphery is the realm most famed for its mages, and it is at the White Tower of Hoeth that Ulthuan's seat of magical learning can be found. There, the greatest collection of Mages, Loremasters and scholars in the world endeavour to perfect their mastery of the sorcerous arts. It is a place of wonders unbounded, where mages strive to harness every aspect of the Winds of Magic.
The Light mage is a strong offensive and support caster of the High Elves.
Use Shem's Burning Gaze to take out lords, monsters, flyers and other large units. Mind your elevation and things in the way of the bolt, you risk wiping out your own units!
Net of Amyntok is their flagship ability and worth maxing out first. It can potentially take out half of the enemy army for up to 45 seconds, giving your units time to destroy the rest.
Banishment is the offensive ability, functionally the same as Chain Lightning. For best effect, target ahead of the advancing enemy army to make sure it strikes the centre of the formation after the 5-second wind-up time. Keep it close to the centre of the enemy formation and away from your own ranks as it can mow down your own units!
Other abilities include giving extra armour and melee defence, giving units unbreakable, and increasing the speed of the target unit.