Thunder Locus and Frost Wave are really good AoE, but in this build I choosed Hailstorm. Also, with the recommended pet spells you’ll have a small army for yourself and Ice Prison + Hailstorm + Frozen Fate does a great crowd control. I’ve read some reports saying that Astral Ally isn’t worth, so it was dropped. But I won’t deny that the bonuses it has are great.
Torchlight 2 Elite Prismatic Bolt Embermage Guide (Wand + Shield) by ImadaĮlemental Boon has a short duration and long cooldown, so it was dropped.