Use the FORCE Luke!
Tsunami, Eel, Panther, Harpy, Quill, Raven, Scholar's Light, Empty Throne, Toad
Murmur, Mistress of Rumors, Rhowan's Crown, Amatok, Spirit of Winter, Chariot of the Dead
Attack Seru, the Mirage, Blind Sage, Ultos, Shepard of Storms, Leviathan
Weapon: Heart of the Oak (cheap alternative: Eschuta, spirit or Oculus)
Shield: Spirit or Dragonscale. Spirit if you want to do more damage with forcewave, Dragonscale if u want to be a lame kiter and pretend to follow this build while in reality, you're only relying on hydra.
Chest: Chains of Honor, "cheap" alternative is fortitude for the cast rate and all dmg increase
Helm: Harlequin Crest
Gloves: Trang Ouls or something else with cold dmg and cast speed
Pants: Levi's, maybe Replay. Something expensive but not Armani.
Boots: Gore Riders, or regular Nike Air
Relic: Titan's Trinket+concentration
Rings: 2x Bul-Khatos or something like it. I was using 2 rare rings with 'of the fallen skies' suffix as a left over from the build I was using before (Sky shard spammer)
Components / Augments
Elemental to Cold facets
Using 4x gul myself
Bootsing armor/armor rating with rest of the components.
Max: Shockwave, Werebear, Enchant, 3 elemental Masteries, Warmth, Frozen Armor, Hydra, Hurricane
Fill rest of your points in Oak Sage with wolverine, energy shield, warmth, lycanthropy, teleport. whatever you think does best for you.
I did a fast setup on the skills, feel free to swap some points around, i definitely did non min-max this build.
If u need less life/armor/defense but more AR, swap werebear for werewolf.
I did not min-max this build in anyway, so if you think there is a point for improvement, go ahead and give it a go. This build should work with all elemental to Fire or Lightning as well. Lightning mastery does offer a bit more damage than the other 2 masteries, as well as Widow/arcane bomb devotion being a stronger resist reduction compared to Murmur. Initially this char was set up as a dual wield trozan-sky-shard build, hence i was already fully turned into a cold build and just decided to stick with it.
Also, I did not fully learn any of the tier 3 devotions in case you're wondering "impossibru"
Leveling Guide (If Applicable)
Max raven and Molten Boulder, use nothing else till you have all the gear pieces above. Until then, also don't equip anything other then some pants.