I’ll try to find wherever you posted your build.
I’m sure 3 mythic items is helping no doubt. I just tried a T5 horde with bone spirit friend and we got rocked pretty hard. Did it, but it was super sweaty and long at end.
8 glyphs? I’m struggling to fill the requirements on just 6 glyphs to max out their needed stats.
I only manually press hydra to keep 2 up during boss fights. I actually run hydra and fire bolt enchants. I spend 200 mana faster than 40 seconds of CD, so i use that instead of the ice blades enchant
Current build (actual gear):
https://maxroll.gg/d4/planner/7d5r80cb
I was using hydra with my setup before I got Doombringer and Andariels. It works great, especially for bosses (although I’m still not sure why). I used that instead of UC for a bit.
Ultimately, I started to struggle to push higher with it and had to switch back to UC.
You got an Axial Conduit build that works well against bosses?!
I want to see it!
MY Axial conduit build was so fun… until I reached the NMD boss (or summoned boss, or other kind of single target boss) and… phew… how did it sputter! 
Omg I never considered banished lords with CL. I like the way you think.
Yeah. I’m basically invincible now, and i do something crazy like 3bn dmg per tick. Not sure how many ticks per second, but it’s a lot of damage.
If i take a rogue with me to drop a totem, i can actually 1 shot bosses. Not sure i saved those but I’ll check. 1 shot Andariel 200 in 4 man. 1 shot beast 200, 1 shot zir 200. It’s kind of hilarious.
But solo it’s a lot less, i can clear t8 without any real fear of death, it just takes awhile because those bosses are sponges.
Currently running andariels, tyraels, doombringer, starless, tal rasha, recharging, shredding, and a couple of other aspects.
I can stand in poison explosions (plural) in t8 and not take damage. I have 85% all res.
It’s pretty godly tbh. I am close to 12/12 mw though.
A good way to solve the mana issues with CL is with the Starlight aspect plus Andariel’s Visage, allows you to basically hold down CL and fire as fast as your attack sleed allows and never stop.
Its great for farming at least T7, havent tried T8 with it but that one might be a bit slow.
It certainly do the insane damage Bumblebee’s crazy Banished Lord setup does though lol.
I’m not using banished lord. Where’d you get that idea?
The problem with my build is that single target lack mana regen, because it’s relying on recharging, even with starless equipped.
Once you have a few enemies, you have infinite mana, and hold CL down and just cast to your hearts content, and maintain 100% uptime on UC, Ice Armor, and conjure stuff every second.
Oh, got you mixed up with Alarien. Figured that would be the only way you might be one shotting those bosses. I sure as hell cant inagine how otherwise. I followed that Maxroll CL endgame guide and put together the mythic version but tbh lucky hit chance to restore primary resource sucks lol. I did not find it reliable at all.
Ahh thats a planner not their endgame guide.
If you look at my planner you can see what I was using before todays changes. The 1 shot requires the rogue totem. I’m not sure why, but for some reason when that totem is down stuff just gets deleted. It’s probably an interaction bug, but it works so I’m using it lol.
Without that totem, the uber bosses usually take a couple of minutes in a group if I’m carrying. I’ll have to look at what it is that’s actualy happening, but I’m now going to have a rogue follow me around everywhere i go lol
Yes, you keep mentioning your build and you have a planner, yada yada…
But you haven’t shared it once!
To be fair Axial conduit was pretty good against mob - whatever level, but against boss that was such rubbish (in my experience) that it was incomprehensible. Perhaps there was a special way to manage it with boss that you found hey?!
come to think of it… I might be able to reach 45 mana per seconds… which might make it work, have to try again with masterworked items…
Blood boil helps alot. Keeps the chain Goin.
Actually, found that build:
https://mobalytics.gg/diablo-4/profile/4ebd4aa2-0169-4fec-94bd-a3a844c3e206/builds/a82b0a8c-6d63-467a-bba6-fcd4138a9883?coreTab=skill-tree&equipmentTab=aspects-and-uniques&variantTab=0
Had to tweak it (pick some Warmth on my skill tree - got none on amulet unfortunately - and would like more anyway )
And it seems to be working NMD96 was fine and quick, boss included! 
A bit confused with the skill layout though… but Chain Lightning on the number bar makes sense but… mm… have to switch them around a bit more…
Forgive me for not posting it in every single post about the build in the forum… sheesh.
https://maxroll.gg/d4/planner/7d5r80cb
How did you post this? Lol I was trying to share one and it wouldn’t let me.
Use the </> icon in chat format bar (or wrap with back-ticks).
I never even thought about Banished Lords, but then I have to drop Tal Rashas for a Ring with Starlight, Im running Andys, Doombringer, Tyraels, Starless, I’m only using 3 legendary items, and Im having none of the problems other people seem to be claiming to have.