Having planned this around a week into the league, and taken the long arduous journey to craft all its pieces, I'm extremely pleased to present my take on what could be the tankiest/highest damage dealing build I've ever played in the game (I'm comparing this to a multiple mirror aurastacker in delirium).

POB (Check notes for config Q&A): [https://pastebin.com/rUL2jHgg]

This build can do it all (tank Sirus storms, the majority of endgame damage mechanics), and pump out 200m+ shaper dps, completely trivialising all encounters in the game.

How might this be different than Cold BV PF?

This build utilizes hand of the fervent, a pair of gloves that give you a physical archmage type of buff on casting a skill (physical flat damage based on mana cost), at the heavy downside of receiving 150% of this mana cost as phys damage taken over time. Combined with indigon spell damage stacking, we scale two orthogonal sources of damage, exponentially increasing the damage of the build before accounting for other more multipliers.

To juice this damage even further, we have exactly equal amounts of both physical added as cold and lightning on the build, such that without any additional mechanics, the exact cold and lightning rolls would be identical. Add in divergent trinity, which converts 10% of our physical damage to a random element, and we will alternate between cold and lightning being our highest damage types. And voila, we have access to perhaps the most overpowered elemental damage support gem in the entire game (trinity).

We also avoid using the agnostic keystone (since it's a trap depending on your life/mana ratios), and have access to energy shield leech as a sixth damage support.

In addition, the lack of ele focus and our damage being split 50/50 to cold and lightning means we can perma freeze all encounters in the game, but also shock for incredible amounts (13-14 million lightning pure hits, which accounts for around a 37% shock effect when assuming 25 million Sirus ailment threshold).

How do you deal with the downsides of the gloves?

This build does not compromise any tankiness when it comes to damage. We stack the regular layers of berserk, and have both immortal call as well as enduring composure on a small cluster jewel, ensuring we proc IC with three endurance charges every single time in combat. This results in 80% less phys damage reduction, and 35% less ele reduction, which lasts for almost 3 seconds with investment into guard skill duration and increased cooldown recovery rate. This corresponds to around a 60% uptime on being pretty much immortal to all damage mechanics in the game.

To boost this even further, we grab soul of ralakesh and have a basalt to reduce the fervent damage, on top of having regular endurance charges for reduced physical damage taken stacking. We end up taking around 1-2% of physical damage with IC up, which corresponds to a physical dot of around 100-200 when IC is up, and a bit more when it's not.

As a result though, we nigh near kill ourselves when we get touched by the maven no regen mechanic, but all these less damage and reduced damage taken mechanics allow us to live, even without ANY regen from our flasks (and RF active). You can scour my vods from the past few days for many maven fight clips.

We also have 50/50 block, not compromising any large cluster jewels for additional damage stacking, so we can sit comfortably in all endgame encounters while we wait for our indigon stacks to go up. As the scaling is exponential with indigon stacking, we start off quite weak, but scale incredibly strongly only after a few seconds of ramp.

We also have permanent uptime of fortify (Due to general cry mechanics and auto cast desecrate for QoL), as well as sigil of power for whenever IC is down (we stack more than 90% less damage reduction when it's up so it doesn't matter). Mana flask regen is not compromised either, as we have around 5400 mana regen per second (and life regen), when our flask is up, due to grabbing almost all sources of mana recovery on tree. This also helps reach an insane number of indigon stacks (88 in my hideout from testing), well past the 80 stack threshold needed to cap out at 2000% damage (assuming 25% indigon rolls)

Budget?

The EO version of this build does around 50-60 million and can be crafted completely on a 150ex-170ex budget (accounting for wise oak balancing). The crit version is around just under a mirror total, making it relatively cheap compared to other benchmarks you might make in terms of damage/tankiness in endgame.

If there's enough interest, I will write a complete crafting guide for all the items, since none of them exist on market (I had to craft every single piece, including my regular jewels from scratch). I can do this for both the crit and EO versions

Please leave any questions below and I'll try to answer them.

EDIT: Crafting guide up: [https://www.reddit.com/r/pathofexile/comments/ls95mz/hand_of_the_fervent_trinity_crafting_guide/]