PoE builds similar to [PoE 3.17] Logbooks until Mageblood! - How many Astragali?

Trying to learn some more about builds and crafting and stuff and want a HOT autobomber for farming essences and harvest and possibly some delve, apart from leveling what should be the obvious upgrades or most likely mistakes I’m doing?

Hi, I've been trying to build around a Herald Thunder autobomber (HoT), using a mana-stacker approach, by combining the "Essence Glutton" necro node via forbbiden jewels (2% base mana/s) and Elementalists (1% base mana/s) from "Mastermind of discord" and Agnostic\ to sustain both life and mana. \Agnostic is provided via Sanctified relic, so it's added under custom modifiers. HoT is in the Crest of Desire to minimize the mana reservation. Build is so far decent for clearing t16 maps - the sustain is GREAT compared

pob: ninja: feel like a lot of stuff on the build can be swapped around, like going golems instead of shaper of winter, not 100% sure about the cold snap cwdt thing either. Im using vaal pact cause it was cheap and i didnt have regen without the stone golem, but it doesnt feel as great as i thought and might go back to golems. I do like progenesis a lo

PoB: Sorry couldn't take a longer video for reddit because the file size gets too big. However the idea behind the build is to trigger herald of thunder just by getting hit or you can self cast any skill/whirling blades. Once HoT starts then the ignites will continuously heal you 2% of your life each time they hit. I preferred to take Elemancer because I'm lazy and I don't want to deal with ailments. The only skill I'm using is whirling blades. All together the build cost 11ex. I have been trying autobomber this league and been tr