Tank in the DPS meta

Regular setup (anti-crit, max tank):




Damage/thorn 78/78 block setup:

Anti-elemental setup:

Anti-elemental non-crit setup:

Secondary damage / DoT setup:

A few other swaps:


Shaper's Touch is not only a budget option, but straight up better than any rare glove when you have 300+ strength because practically it turns all strength into intelligence, and it greatly boosts armour through evasion scaling (the armour on the base is insignificant).
Astramentis is also BiS, can give 220-330 intelligence equivalent (44-66% ES) thanks to the gloves. All of the three stats are used up, because it frees up 2 suffixes on rings, which can be int rolls or resists. It would require a mirror-tier rare amulet to beat it in pure ES numbers.

This setup is still not perfect, I need to get a useful helmet enchant, probably light warp duration, and I have 2% more block than needed with the Advancing fortress. A lvl4 enlighten would make 4% unreserved mana instead of the current 1%, so I could use a lvl21 LW without reduced mana, and Tempest Shield could get a 4th support gem.

Tree: https://www.pathofexile.com/passive-skill-tree/AAAABAUDAAFvBAcFLQthDXwOPA5cEVAUcRXXFy8bJRzcHRQdTx8CIWAi9CSwKPoppSy_LR8vbzW5NsU6UjwtQKBDY0PIRX5Gt0lPSbFLrkyzTlJPBFWpVdZWSFZjV8lZ81xrXhNfKmFSZOdmVGaeaFho8moBavpsC20ZcLtxTXIPcql08Xrvfmx_xoCkgOCDX4RIhTKGYIauhtGJ2It6jHaPGo9GkiuTJ5Rvly2XtJitms-bMKEvpRinCKcrrKqvbLcxuJO8qr6KwcXDbcT2xq7QH9Nv12rXltfP2CTZE9lb4vfpAuoY6-Tr7uwY707viO_r9zL3wfjr-Tf60v0A?accountName=M%C3%A1rkusz&characterName=M%C3%A1rkuszTheBearded

Stats:
Regular setup (anti-crit, all purpose):
ES: 19679 (+1k with rare belt)
Armour with Flasks: 155 742
ES Gain per block: 6230
Armour without Flasks: 38512
ES Gain per block without flasks: 1540
Block: 75/75
Crit multi reduction: 50%
Resists: max: 75/80/76 total: 133/118/117
Dodge: 8% after taking crits (boots enchant)
Swapping in the rare Crystal belt gives exactly 1000 ES and better resists.

Damage/thorn 78/78 block setup:
18144 ES, 155 119 Armour, 78/78 Block, nearly double damage on spells, Anvil rekts glasscannons.

Anti-elemental setup:
15420 / 0.75 = 20560 effective ES against elemental hits, 162 721 Armour

Anti-elemental non-crit setup:
16385 / 0.75 = 21847 effective ES against elemental hits, 162 721 Armour, but only 20% crit multi reduction

Secondary damage / DoT setup:
25160 ES, 20% DoT reduction, some ES regen (mostly from ascendency) and a 10-use ignite removal flask (for SR)


Conclusion: The build can gain as much ES per block as some people have as total EHP (6k+), yes it's op. I've tested against most top DPS builds in standard, and regular hit-based blockable builds can't kill it reliably, based on rng it takes 10-60 seconds to die them. A few exceptions that can kill me fairly fast are Flameblast, pure EA, HoT (IF they remove their CWDT setups or don't get near me). I can stand in Scorching Ray for a fairly long time thanks to the flask.
I dare to think this is the tankiest build overall atm. (Zerphi tanks can be better in few cases)

Path of Building code: https://pastebin.com/64nsb5up