This is one character concept I’ve never seen posted on the forums, so I thought I’d try theorycrafting it. I was thinking of something like this - http://grimcalc.com/build/MeVKAxC
The idea is to primarily use lightning damage from Primal Strike and the Arcane Bomb devotion, paired with some supporting frostburn damage from Elemental Awakening, Blade Burst, and the Blizzard devotion. Survivability would come from Heart of the Wild, Pneumatic Burst, and Shadow Dance.
I’m sure it’s not a stellar build, but could you see something like this doing adequately in Ultimate?