Current pob: https://pobb.in/DkaqD_QK6t22

This is my take on the Spark variation of Pathfinder Mahuxotl's. The goal with this build was to facetank every single uber without any cheesy unreliable mechanics like molten shell, and also to have enough damage to make it playable.

I chose Spark over Forbidden Rite because I just could not be bothered to have to aim my skill, even with auto-targeting and a lot of projectiles it still feels like a single target skill rather that an aoe skill like Spark feels. Also makes clearing and certain bosses so much easier.

The gist of the build is mostly the same whichever variation you choose, however I found that my setup with Cloak of Flame was far tankier to physical damage than either Fourth Vow with 30k armour (which would lose me an important flask slot and aura slot), or Doppelganger guise which would make me lose about 40% of my phys max hit but gain 25% and 40% on my elem/chaos max hit, which might still be an option if I figure out how much phys reduction is actually needed in ubers.

I achieve almost 90% phys taken as, can't quite get 100 without some insane corruption on my shield and perhaps a 10% on my helmet. Taste of hate normally can't be used with Mahuxotl's because everyone runs negative cold resistance, making the conversion of 15% phys taken as cold to actually lower your ehp/eMht. However I have enough cold res on my gear and Purity of Elements to actually bump my cold res to 80% and make Taste of Hate usable, achieving 100% phys taken as and making my max phys taken hit to 80k~ I don't think this is necessary and I would have to swap my silver flask out which isn't worth it, so for now I'm not using taste of hate unless I want to tank some insane hit for a video.

Life flask with flask recovery nodes on tree and tattoos makes my life flask regen 3.5k hp/s. Kind of overkill and you have to use it every 5-6 seconds so you could just use a longer duration flask for less regen.