Level 100 Crit Arc of Oscillating Reliquarian^3.28

Notes

This entire PoB is conditional on the assumption that Doriyani's Prototype's modifier "Nearby Enemies have Lightning Resistance equal to yours" 
is able to be Enshrouded onto any other unique chest, so that we are allowed to deal non-lightning damage. 




THE BUILD IS BRICKED IF THIS IS NOT THE CHOSEN ENSHROUDED OPTION FROM DORIYANI"S PROTOTYPE





We don't need any other specific unique chest, so long as the end result doesn't brick us mechanically (e,g, Dendrobate's chance to poison support.)
There are plenty of good options but the giga mirror chest would be moving the mod onto Cloak of Flame or Cospri's Will.

Penance Mark's Phantasms have a unique modifer, unable to be cursed, which is different than Hexproof. Hexproof enemies are still considered to
be cursed, and so that allows us to exploit this asymmetry in order to automatically discriminate between phantasms and all other targets.

We can use the curse mastery "+20% chance to Ignite, Freeze, Shock, and Poison Cursed Enemies" in combination with a 
curse on hit source (Delve or Influence Ring, Glove corrupt Implicit) and flat added Fire and/or Chaos damage to bypass Southbound's 
downside.This will leave Phantasms at 1 HP while killing every other monster, This will be slightly RNG as they must be ignited or poisoned to die.

Since I built into high crit chance, you have to take the Fire Mastery to remove the inherent effect "crits automatically ignite" or rely on 
poison only, and avoid flat fire damage. Without this mastery your crits will ignite the Phantasms and kill them. 

The alternative will be personal preference and how mapping "feels" with only 20% chance to poison, but if the jank is low enough
avoiding flat fire damage and going poison-only will save you 5 passive points on the fire mastery.

Melding Of the Flesh's upside does not do anything for us since we're damage shifting, but does provide large negative 
lightning res while leaving Jewlery for shenanigans, and we simply further invest in max fire res with a Mageblood flask.

4-link Arcane Cloak does not spend ES even with EB, so Automating it can upkeep Inspiration charges and Arcane Surge, 
which still affects main links. Its spend is not a mana cost, so supports don't modify how much it sacrifices. Level Vitality to 
get your mana as close to 24 as possible without going below, so it will spend 15 mana every ~5 seconds, giving 100% uptime 
on a level 1 Arcane Surge and generating Inspration Charges that also affect Arc.