Been working on my ward stack kinetic blast necro for a while now and got it fairly min maxed so I wanted to show it off a bit.

Core of the build is Celestial Mathematics keystone provided by the new Heroic Tragedy timeless jewel, combined with 4 regenerative runes notables on the same jewel and enough flask effect to fully restore an iron flask every time your ward breaks I effectively have 38k unbreakable ward. This gives almost 10,000 flat cold damage which I am scaling in a variety of ways.

Necromancer's Corpse Pact node grants 200% increased attack speed if you have consumed at least 50 corpses recently, which I automate with Cast on Ward Break support triggering desecrate and flesh offering, which also affects me due to Necromancer's Mistress of Sacrifice.

I use Forbidden Flesh/Flame to steal Frigid Wake from occultist, since I am pure cold damage it is 15% more damage along with freeze and chill immune. Generic spell damage scaling applies to Kinetic blast at 200% of values, so scaling that wherever I can, a lot from cluster jewels. And finally I am using an 11-link wand setup with squire due to insane levels of flat damage from Celestial Mathematics.

Defensively 38k unbreakable ward is just about all the max hit and multihit mitigation you need. I still made sure to cap resistances, outside of chaos due to there not being very many large chaos hits in the game. I have the pantheon for +40% chaos resistance against damage over time so I am still near capped on chaos resist for the main purpose.

I have freeze and chill immune from my flesh/flame, my timeless jewel removes a damaging ailment every time my ward breaks, which is every time I get hit, so I effectively have bleed, poison, and ignite immunity from that. I do not have alternate ailment immunity or shock immunity, but it has yet to be a problem even in juiced deli breach mapping.

Since I am immune to any hit damage that does not get past my ward the main defense issue is DoT. Using the Olroth bloodline I take 50% less damage from damage over time, Arakaali pantheon gives me almost capped chaos res against chaos DoTs, and 10% reduced damage taken from DoTs as well, most DoTs are reactable this way, though I can't facetank shaper beam or anything excessive like that. I can tank most in-map DoTs with the 4% of life recovered when you use a flask mastery, attacking 10 times a second means I am using 10 flasks per second, which is effectively 40% life recovery that also works in no regen maps.

The hardest part of this build to figure out was the mana, and I still haven't perfectly solved it. I have -14 mana cost on my amulet, -7 mana cost on my helical, -9 mana cost on my watcher's eye, 25% reduced mana cost of skills on the tree, inspiration for 42% less mana cost, and my kinetic blast still costs 19 mana. My cast on ward break setups also still cost a lot of mana, flesh offering costs 7, and my immortal call costs 24. I think the optimal solution to solve this is a 3 positive reflected simplex, but that is also very expensive, even compared to the rest of my budget on this character. If anyone has suggestions for how to deal with mana cost please let me know.

The achilles heel of ward break builds, flask siphoner mobs, is actually fairly easy to deal with on this version due to being able to offscreen.

tldr: Fairly basic celestial mathematics ward break wardstacker. Good all rounder, speed mapping, bossing, extremely tanky against hit damage but sometimes dies to dots. Can offscreen flask siphoners most of the time

video showcase of ubers and mapping: https://youtu.be/5ar24Psgo_c

Uber eater with item rarity socketed instead of bonechill

Uber maven with bonechill socketed, includes 1 phase skip

Fairly juiced breach map, I didn't put deli orbs on because I forgor

Current PoB: https://pobb.in/3XySC1RcrjMI

Current budget is about ~3-ish mirrors, though most of that is in the belt, and I got a very lucky volatile on that, it would function just about the same on ~1 mirror budget, was playing on a 67% Ynda's until 2 days ago.

Old PoB before a lot of upgrades: https://pobb.in/GFOZCQHn2QDf