I thought I would share this build since I've been having a lot of fun with it and it doesn't look like anyone else is really playing something similar.

Prior to the league I was really interested in using the new Sabo Triggerbots and stacking abyss jewels with the changed shroud the lightless. Then I saw this post about lightpoacher which made me decide to include it in my plans: https://www.reddit.com/r/PathOfExileBuilds/comments/12a69hy/lightpoacher_charge_stacking/

What this build is good at:
- It does pretty insane damage for clearing content (maps/deep delve).

- It gets started on a pretty low budget for a CoC build

- You have a lot of flexibility to customize the build with your abyss jewel choices. Can go for more ailment avoidance, stun avoidance, more damage, more crit chance, more attack speed, more resists, more stats, etc. Due to the variety of good options it is a lot cheaper than other abyss jewel stackers since you can find very effective jewels for 15-30c.

- In its current iteration it is quite tanky in maps/delve. I have psuedo overleech with petrified blood and energy leech with the instant leech mastery effectively adding life/es gained on hit. I have fortify in maps and around 70% psuedo spell suppress with the lucky mastery. Around 5k life and 1.2k es with petrified blood. I do need to work on my chaos resistance after switching to tailwind boots. We also run a lvl 20 vitality in our arrogance setup and have consecrated group for more regen to offset petrified blood. We have 4 endurance charges and Cwdt immortal call with a good duration.

What this build is NOT for:

- This build is mechanically not really appropriate for pinnacle bosses. This is due to the on-kill mechanic of lightpoacher. That said in my current version I was still able to easily get all my watchstones and when vaal breach did come online it just deleted the bosses.

My character on poe.ninja:
https://poe.ninja/challenge/builds/char/ThyEmptyLord/AbyssalPoacher?i=0&search=class%3DSaboteur%26item%3DLightpoacher

My current PoB (see notes below!): https://pobb.in/VTV6ALuvNEGy

An early league PoB: https://pobb.in/u_n9IyNpF3mU

Here is a video I threw together a few days into the league of a T16 map. This was on a 6-7d budget and about 1/5th of the build's current damage: https://www.youtube.com/watch?v=ndTkmxNBQ5U&t=2s&ab_channel=Reduction

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How the build works:
The build stacks abyss jewels to get elemental penetration, % maximum life, and 5% of physical damage as extra damage of EACH elemental type. With the currently 15 abyss jewels in my build that is 75% of physical damage as fire, lightning, and cold damage once you kill a pack of monsters.

The critical mechanic here is that spirit burst doesn't trigger off of triggered spells and only happens once at the start of channelling. This allows us to comfortably have 100% uptime while mapping.

We need to use a physical damage spell in order to make use of lightpoacher. I chose purifying flame though I looked at exsanguinate, reap, glacial cascade, and hydrosphere. I like purifying flame for the following reasons:

- High added damage effectiveness for abyss jewel added damage

- It is an AoE spell

- Consecrated ground helps our HP regen and provides partial immunity to curses.

- The alt quality increases damage taken on enemies

Note that I don't bother to convert the remaining purifying flame phys damage to an elemental damage type. This is an option but it didn't seem worth the investment to me. That is one benefit of something like glacial cascade which already does 100% conversion.

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We scale our damage in a few different ways. Here is what the build takes into account:

- Critical strike chance and multiplier. Obviously being a CoC build we need to reach 100% crit chance on our staff attacks. We also use a +1 to spell crit chance crucible node in order to cap our spell crit. Abyss jewels are very useful early to get global crit chance and later for global crit strike multiplier

- Added physical damage to spells. This comes primarily from abyss jewels in two forms. "Added physical damage to spells" and "Added spell physical damage with 2h weapons".

- Managing our attack speed and cdr breakpoints. With the sabo ascendency you immediately reach the first breakpoint and can push up to 7.57 attack speed. After lvl 5 awakened CoC or a lower lvl Awakened CoC and a CDR implicit on boots you can reach the new breakpoint and go up to 10.10 attack speed. We gain attack speed on the tree, on abyss jewels with the "attack speed if you have crit recently" jewels, optionally with tailwind or action speed eldritch implicit, frenzy charges, and base attack speed on our staff.

- The + fire/phys/all spell skill gems on staff or amulets. This is a really effective way to scale the build and a +5 staff would probably be BIS.

- %spell, %physical, %elemental damage. Sadist on cluster jewels is a great example of this.

- The elemental damage master for "25% chance to invert enemy elemental resistances" is very strong against unique enemies. We don't bother applying -ele res or exposure to enemies since we have 60% elemental penetration. This means that for bosses with 50% elemental resistances there is a 75% chance we treat them as having -10% ele rest, and a 25% chance to treat them as having -110% ele res. PoB says this is over 10% more dmg on pinnacle bosses.

- Shock effect is decent if you can pick it up since we always shock enemies.

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Mana costs:

There are many ways to do this, I have tried several different versions that worked. My current method clears up a flask slot which is why I use it.

Here are your tools, you will probably need something like 3-4 of these in combination:

- Inspiration support (later can use divergent)

- Enduring mana flask

- Mastery for 30% of mana costs spent as life instead

- Crafted reduced mana cost on a flask (can do this on a cinderswallow or any other flask. If using cinderswallow you an always get the 2% of mana gain on kill though I prefer the ES regain version).

- Mana gained on hit / mana leech from tree with instant leech mastery.

- The -X mana cost of skills craft on jewelry. Not the channeling skill version.

- Lvl 21 clarity in arrogance setup

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Aura setup:

We run the following auras:

- (Mana) Grace. Can run zealotry or determination if you prefer. May not be able to fully level this due to dex reqs

- (Mana) Herald of Ash. Can run Herald of Purity instead. They are similar damage depending on how many abyss jewels you run

- (Mana) Petrified blood. Crucial for our setup as it allows for overleech, takes advantage of our high recovery, gives us low life spell damage.

- (Life/Arrogance) 21 Precision. Crit chance and accuracy

- (Life/Arrogance) 21 Clarity. Lots of mana regen.

- (Life/Arrogance) 20 Vitality. Gives us tons of regen to help petrified blood feel good

You can swap out one of the life auras for a banner instead if you prefer or don't need them.

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Useful abyss jewel mods:

Our jewels aren't particularly expensive because we can be flexible with what we need. Here are things to look our for:

- (Critical) Maximum life

- (Strong) Global crit multi

- (Strong) Global crit chance

- (Strong) Phys damage to spells / spell physical damage with 2h

- (Strong) Attack speed / Attack speed if you have crit recently

- (Situational) Stats

- (Situational) Resistances

- (Situational) Stun avoidance

- (Situational) Ele avoidance

- (Situational) Implicit immunities (corrupted blood/maim/silence/hinder)

- (Situational) Phys as extra ele

- (Situational) Maximum energy shield

- (Situational) CDR if you really need to hit a breakpoint before lvl 5 awakened CoC.

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Gear:

- Staff should have attack speed and ideally + to gem levels. Nice to haves are base crit chance and spell damage. Mine has culling strike. On crucible tree you want spell crit chance and energy leech support. These are not necessary but they feel really good once you get them. It took me about 7-8 forges to get these on my staff with several close calls. You would prefer an eventuality rod for max charges which I may attempt later. There are a lot of guides out there to help with crucible tree crafting. The main thing to keep in mind is that if energy leech is the only position 4 node it is much more likely to be on the resulting tree.

- Lightpoacher is a core part of the build. 2 socket lightpoachers are only 20c or so. I ended up corrupting 20-30 of these for +1 max power charges but that is just a nice to have. You don't need the grace reservation enchant, I just put that on myself when running some labs looking for the purifying flame inc damage taken enchant.

- Shroud of the lightless. You don't need the 3 abyss socket chest. I only recently switched to it. There are some decent corrupted implicit 2 sockets you can use as an intermediate upgrade. Otherwise just get a decent defenses roll on it.

- Mark of the shaper / elder ring. These are optional if you really need to fix resistances. They do give a lot of damage though.

- Darkness enthroned. This is optional but it is a nice spot to keep your best rolled abyss jewels. Can use a stygian vise with a chaos res roll instead.

- Boots. Initially just some resistances, movement speed, and decent eldritch implicits. Later tailwind is nice but honestly an action speed implicit gets you pretty close.

- Amulet. Nothing required, just some life/global crit multi/+gems/resistances. Can swap in a unique amulet if you want.

- Cluster jewels. You'll get a lot of damage out of elemental clusters with Sadist for 60% ele damage. If there are 3 notables Sadist should be in a pathing node allowing you to ignore the back notable. I chose use use a 2h cluster for the "Overlord" notable which gives me fortify during maps and delve. This is a lot less damage than the ele damage clusters but it feels really good. You don't really need the medium crit cluster jewels, I just included it for the 5% double damage since I had some extra passives, it is definitely your lowest priority.

- Gloves. Can get accuracy/attack speed implicits. Otherwise just get good life/resists.

- There is an amazing spot to the right of shadow for a brutal restraint or lethal pride. You can potentially get 4-5 double damage nodes (or max life, %phys, crit, attributes). I didn't go this direction yet because it means losing an abyss jewel but it is a viable upgrade at some point.

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Pinnacle bosses:

Again this build is mechanically not focused on pinnacle bosses because we get 4x the damage when we kill enemies. That said at the high end it still can run over these bosses with its base damage. We include a vaal breach to make the second half of these fights easy but it is not really necessary in the build at all. If you do include it then you want to wait until near the end of an invulnerability phase and pop it to boost your damage for 20 seconds.

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Notes on the PoB:

- For some reason PoB is not automatically calculating +gem levels from my staff. I manually added these to my gem. If that gets fixed you can revert that change.

- PoB currently calculates the 25% less damage from triggerbots but not the 2x casts. For now I manually set the count to 2 on purifying flame. If that gets implemented you can revert that change.

- Configurations. See the new bullets

- We get power changes on kill and on crit via the tree and assassin's mark. We get endurance changes on melee crit. We get frenzy charges on crit against marked targets. Only the frenzy charges sometimes drop if we don't have unique or rare enemies show up, but that doesn't happen too often and when it matters they are always up. We take the 100% increased charge duration which is primarily for spirit charge uptime but also helps keep other charges

- We always crit and always hit with all elements so we ignite/chill/shock everything. This is important for our ascendency.

- I checked "always on full energy shield", the alternative "leeching energy shield" is actually more damage but isn't usually the case.

- I set spirit charge count to match the number of abyss jewels. This doesn't usually update automatically so make sure you change it if you switch out abyss jewels somewhere.

- We are using petrified blood (with 55% low life threshold for 10% more life) so I have Low Life checked.

I'll try to address any questions anyone has and update this if I think of anything else important.

Again as a last reminder/warning: This build is made for mapping/delve/legion etc, it isn't the build to go with if you want to specifically farm bosses. It can manage them but it is missing most of its power there.

EDIT:

Here is a video of wave 30 simulacrum: https://youtu.be/Zv1cOlO7i8A

Here is a video of a 100% delirious juiced map: https://youtu.be/aZMfQ8zVRAA

EDIT 2:

I am playing around with another lightpoacher build so I may steal a few items from this character. Here is a final state PoB: https://pobb.in/T1Bl4ZchUsWP