PoE Molten Shell, Champion builds

Theory tag because I have a PoB and no character to actually show it with. But I've tested the mechanics, and know they work. The question is whether or not my PoB is accurate. Where does the come from? The idea is that buff up , you spawn all your worms, throw the beartrap on your target, then use call of steel 4 seconds later. To do some math: PoB reports that the total stored damage of our Impale is 1 million. The Impaler inflicts 4 additional impales, so each beartrap is 5 million damage in an AOE. With 5 worm flasks and a bit of reduced flask charge

-------- Note: 1. Upgrade Watcher eye jew ~30-35 divines: +60% crit extra dmg reduction - Vulnarability immune - Or Poison immune (malevolence) - Or bleeding immune (malevolence) - Or dmg over time multiple (malevolence) - Or physic dmg reduction ========= Total investment (estimated) 1. Rare: self crafted ~ 60 divines 2. Unique: - Helmet: 1 divine - Ring+Amulet : 2 divines - MB: 120 divines 3. Jew - Cluster

POB: I followed maxroll.gg guide for it but I think i pretty much covered all the basis, the only thing that I was thinking I could improve was +2 neck and better jewels, can someone offer other upgrades I may be missing? First time with MB so not sure what flask setup I should use

This focuses on using Grace to make an Armor Stacking Champion. I used Grace Buff corruption mod from String of Servitude instead of taking aura effect from cluster jewels. I have free defiance banner from ascendancy. I also have free determination from guardian blessing though I am not sure if there are better ways to get this. Anyone know how to improve this on low budget?

pob: Hello, I have invested 15+ divines into phys flicker yet am still struggling in juiced high tier stuff(3k+ wips on average). An average map is one to two deaths minimum, struggle to kill the occasional double empowered mob. Getting one shot a lot, especially when molten shell is off. Can someone look over my pob and help? Note this is my first time setting up my own build and going this far with it, any help is appreciated

I started the league well over a month late; initially as a Boneshatter slayer, which was fun but kinda meh. The low price of The Squire made me read up on arakali fang builds, and with less than 25 divines I made the following: Im only level 88 and I am able to clear T16s with 4k+ wisps with extremely suboptimal gear which is insane to me for the budget. I crafted both of my abyss jewels by alt spamming and cluster jewel with alt + regal + lucky exalt slam. EHP is great (excluding phys max hit) but this is without flasks and mo

Build: can someone help me figure out where to get that last 7%?