Spirit Tornado getting a frost AoE makes me want to lean into a cold themed Barb. Secrets of Rime needs to come from multi and druid's spells compliment the vibe with the elements and spiritshift more then wizard/priest would. Unfortunately Spirit Tornado's Cold component only kicks in at lv 19 for a multiclass. No subclass Barb to not deal with Frenzy and Lifegiver Druid because it has the bigger list of free spells I'd want, leaving more ability points to invest into passives.
Between water/beast/ground spell options I should cover spellcasting options versus Cold Resistant enemies? Melee, Brute Force and Spiritshift always available. Bear or Wolf Form preference, bear roar and AR probably more valuable then Wolf with Knockdown?
There any interesting equipment/synergy for this? Pitfalls to this theme?