Highlights of the build:
-EB granted by Devouring Diadem with 40% MoM (buffed this league)
-3k life with Petrified Blood and around 1.8k ES (you need 66% of your HP as ES (1980 in this case) to fully make use of 40% MoM, gotta pump that number)
-Good regen and damage granted by Inquisitor
-~50k armour with granite flask, ~36k without
-100% suppression (nerfed affixes taken into account)
-95% reduced effect of curses
-Creeping Frost can shotgun, that's why we can calculate our damage as x5 in PoB
-EB let's us use Divine Blessing setup

using Devouring Diadem let's us reserve our mana and not invest in mana regenration to be able to cast spells, on top of that 40% MoM is gonna provide more defence.
PoB: https://pastebin.com/13hgwqZR
items are not day 1 tier but they are very reasonable to get also you might wanna get 1 Unset ring cause the build is kinda socket starved. the build can get more damage if you get proper items (most my items are placeholders).
the playstyle is fun which is always the thing with Herald of Ice.

Let me know what you think. Cheers.