https://pastebin.com/1SAmG6Ls

Concepts

• Smite + Wrath scaling efficiently through Supreme Ego and Aura Clusters

• RT + Supercharge for Can't Miss and free Lucky Damage, exploiting the huge lightning roll range

• Frostbreath for Double Damage

• Tribal Fury (Ancestral Call overlap trick) for doubled damage again

• Berserker Rage scaling for free damage

• Perma Berserk

• Near 100% Ancestral Cry upkeep for insane clear

• Glancing with max block (+ eventual life on block shield)

• Vaal Molten Shell possible with a bit more Armour investment.

• 200%+ Life

• Blood Magic

Notes

• Aspect of Carnage is not recommended in HC but go nuts in SC.

• Crit is possible with Precise Commander scaling instead?

• Blitz is possible if you go crit.

• Multistrike + some adjustments is huge damage but loses exert?

• Vaal Haste becomes a second Berserk but means VMS downtime.

• Melee Splash works with Smite and could double clear if there's a good way to get it.

• Ascendant, Guardian, Necro and many other viable classes with tradeoffs are possible!

Alternative Build

• Another option is going completely with another skill and just using Smite for the buff.

• Could allow for very crazy scaling with the right setups (dropping Strike investment).

EDIT: Almost forgot. Sources of easy chill.

• Ailment Cluster - https://pathofexile.gamepedia.com/Cold_Conduction

• Ailment or Cold DOT Cluster - https://pathofexile.gamepedia.com/Chilling_Presence

• Heist Chest - https://pathofexile.gamepedia.com/Expedition%27s_End

• Aquamarine Flask

• Ring - https://pathofexile.gamepedia.com/Icefang_Orbit

• Ring - https://pathofexile.gamepedia.com/Venopuncture

• Call of the Brotherhood

• Arctic Armour (Anomalous is best)