End game build for Saryn

Can endlessly farm Steel Path/Arbitration/whatever you want. For ESO, this build will be outperformed by a more power strength centric build, but can still farm it no problem. This build is focused more for true endurance runs, where power strength simply needs to be positive (above 100).

How this works:

[Saryn] needs all 4 stats, but in order of importance: Range, Efficiency, Duration, Strength. A lot of people like power strength on [Saryn], but it is honestly almost irrelevant on her especially in endurance runs. Spread radius being as large as possible helps her damage being sustained as it spreads more easily among enemies, and allows her to easily maintain her spores. The radius of gloom being large gives good slow coverage, and coverage to heal herself off the damage of the spores from gloom. Efficiency is important as casting spores regularly helps, and keeps glooms cost low. Glooms drain scales off of efficiency and duration, and this is the near ideal balance point of those two stats. Spore and Gloom do most if not all the work in endurance runs, with some help from miasma, and a little from toxic lash. Spore+Gloom deals immense damage, while providing large healing to [Saryn] which is what keeps her alive, along with the AOE slow. Miasma doing viral damage helps kill enemies faster, and lasting longer gives it more ticks to do damage over allowing for more viral procs, which in turn helps kill enemies faster.

Build Breakdown:

[Steel Charge] is for the space of not needing more forma. Triple Umbral Mods+[Adaptation] for the immense bulk provided and the damage resistance to survive hours of steel path. It also gives you all the power strength needed for endurance runs. As you are healing off Gloom, the incoming damage will kill you without them. [Overextended]+[Stretch]+[Cunning Drift] is to optimize range. You need to run efficiency and duration on [Saryn] as well.

At this point, you ask why does [Saryn] need duration? Two important reasons: spore damage decay is based off duration, not strength. This means, when Spores is decaying, how much is lost per half tick is based on duration. If you tank duration, you will rapidly lose spore damage. With low power strength, it kills the build. So why not high power strength low duration? There are again, two parts. The quick part, low strength means less slow, which allows this build to run defenses without teammates wanting to gut you. Now the interesting part. The strength and EHP provided by the triple umbral mods is needed for virtually every iteration of this build I have tested, you are prone to being one shot by a bombard or similar unit otherwise. Add in [Adaptation], and it gives [Saryn] enough survivability to effectively heal off Gloom. This leaves the exilus slot, and four other mod slots. Range is king on [Saryn], so optimizing range is important. This leaves 2 mod slots to work with, and no combination of mods other than [Streamline] and [Primed Continuity] get the desired point for Gloom not to devour energy on this build. (Other game modes might not need so much range, but endurance Steel Path and Arbitration necessitate it). The mod you could cut for strength would be [Overextended], but the loss of range absolutely dwarfs the increase in strength.

Now, you can always forma the exilus slot to switch the aura to [Growing Power], but it gains little to her abilities and I am a large fan of melee weapons for damage (even after the nerf). You can also use Shattering Storm on a hammer (like the Kuva Shildeg) to spread spores at an incredible rate (https://overframe.gg/build/189587/ Side note: I use Naramon often for the combo counter). The slam attacks in hammer combos hit numerous enemies at once, and allows you to rapidly spread spores. Weapons like the [Kuva Nukor] and [Ignis Wraith] obviously help spread spores.

Final Notes:

[Saryn] possesses immense DPS, capable of killing enemies hours into Steel Path as if you just started. With the capability to subsume Gloom, it gives her access to healing that is nearly unmatched. Gloom gives her everything she needed in her kit, and for endurance runs and in general I cannot stress enough how well Gloom slots into her abilities. This build is expensive, and difficult as it uses an Aura Forma, an Umbral Forma, and two other forma. It requires a large amount of Endo, but this build is worth all the effort. The Arcanes chosen help compensate for the lack of a Prime [Flow] in the build, so the r5 Energize is pretty key to the build, and the r5 [Guardian] is to allow for additional bulk.

Answers to questions:
[Rage] is fine, but this build is very energy hungry. You want to repeatedly cast your first, and keep gloom up. The other issue is gloom+spore can make it awkward to get hit sometimes. Energize is highly needed from the lack of prime [Flow]. Avenger is also not that good, as spores is still doing most of the damage. Hope this answers your question!