Skills: Fire 5, Lightning 5, Frost 5, Heal 5
Passives: Durable 5, Int 5, Crit 5

I take fire and frost not only for attacking but also defense, fire can stun and reduce hit chance. Frost also can stun and freeze.
Lightning for 250% crit damage, and adding crit in my passive i get a lot of multiple lightning when casting it. I prefer arcane shield, but no slot left in the map skills, so i take durable for change. I take 5 heal is for full support.

Use it for PvE.