A goal for me this league was to hit 2k depth ever since they rescaled Delve to make 1.5k depth as hard as the old 6k depth scaling cap. I was going to do it on Ruetoo's FR build (hit 1.9k on it), but I saw the rank 1 Delver playing the attack version of Aurastacker that runs the new keystone, Precise Technique, and I wanted to give it a try. This build is inspired by his.

POB: https://pastebin.com/vJZmEH19

PoE profile: https://www.pathofexile.com/account/view-profile/kaevix/characters?characterName=ZERO_GPA_SPEEDRUN

Ninja: https://poe.ninja/challenge/builds/char/kaevix/ZERO_GPA_SPEEDRUN

The main benefit of this version is that you get access to "Strike Skills target 2 additional nearby Enemies" implicit on a pair of Eldritch gloves, instead of being forced to use Shaper's Touch for accuracy, which is huge for skills like Smite and Lightning Strike that have secondary portions with overlapping properties.

Traditionally, Shaper's Touch along with a low levelled Precision is required to hit 100% accuracy and maintain a low amount of crit to proc Elemental Overload (or alternatively, Bottled Faith + crit multi jewels and run a crit version - not a fan because Replica Dreamfeather's base crit is very low, and no cold conversion with CotB means no Hatred base crit Watcher's Eye). This doesn't really pair that well with the Lightning mastery that causes non-crit Lightning damage to be lucky, since you are still critting every once in a while resulting in inconsistent dps. Precise Technique combined with Resolute Technique corruption on Replica Dreamfeather completely solves this issue, setting your accuracy to 100% and crit chance to 0%, and also granting an equal amount of damage boost to Elemental Overload.

Not running Doryani's Prototype is a defensive choice (and for me, a budget option since I don't have 1 point voices - I need the chest for mana reservation efficiency) - since this build gets a lot of flat ES from Discipline but lacks % ES due to the stretched nature of an Aurastacker's tree, a Grasping Mail with % Global Defences greatly boosts the ES of this build, and at the same time happens to boost armor and evasion which grant a lot of damage as well. As a bonus, this build gets to cap Spell Suppression off the gloves and chest as well as grabbing Magebane on the way to Iron Reflexes. It is ridiculously tanky, although it's way overkill for anything outside of deep Delve. Penetration is still okay, Awakened Lightning Pen + Watcher's Eye + Conductivity ring combined is enough.

I opt for Lightning Strike because the Eldritch Implicit basically doubles the damage of this skill if the targets' hitbox is large enough (sadly Aul isn't one of them, but Kurgal is). Additionally, Point Blank is conveniently on the way, providing a nice 30% damage boost to the projectile portion of the skill's damage.

Other differences include using Militant Faith for reduced mana cost and aura effect, and skipping Divine Blessing. Since the changes to reservation, stacking many auras has become more difficult, especially without the use of DB. I'm not exactly the biggest fan of DB on Aurastacker because it eats a lot of gem sockets; you need both DB + Inspiration for an extra aura, and on top of that the duration isn't very long without Malevolence, which the attack version doesn't use.

Forbidden jewels are used for Berserker over Raider since it's possible to get Onslaught on boots/ring, and Frenzy Charges aren't quite as insane compared to Berserker's damage + Rage or Necromancer's attack speed.