General Use Sevagoth with either non-helminth base kit or helminth options. You can choose to either keep Shadow or subsume over shadow depending on your preference. If you don't find shadow fun, subsume over 4. If you like shadow, subsume over 2.

In general Shadow is an annoying ability to use because it has a number of limitations:

• Claws have overall slow kill rates due to being melee and cannot equip acolyte mods OR benefit from gladiator mod set
• Embrace is an extremely slow and frustrating grouping tool with a narrow cone
• Shadow doesnt benefit from decaying dragon key so has a hard time shield gating
• Many helminth abilities become useless in Shadow, or do not directly affect shadow (e.g. roar, nourish, warcry)
• Takes another 5-10 forma to maximise due to being a whole frame + melee you need to consider.

If you want to use Shadow, follow these builds:
Shadow: https://overframe.gg/build/456961/sevagoths-shadow/shadow/
Heavy Spam Claws: https://overframe.gg/build/456962/

If you DON'T want to use Shadow, use this Shadow build dedicated for reviving only during the passive:
https://overframe.gg/build/457771/

PLAYSTYLE

1. Activate Gloom (can use either Molt [Vigor] + Zenurik to boost strength before casting for higher slow, or build up kills with Augmented then recast Gloom once max)
2. Cast Sow to mark enemies in 28m range
3. Cast Reap and aim onto groups of enemies to make it move into them, giving a damage vulnerability and causing explosions that can nuke groups of enemies. If you are up close to a group of enemies, you can spam Reap to cause more explosions.
4. Using Reap and/or Sow and killing enemies will build up your Death Well. Once full, you can enter Shadow at any time.
5. Enter Shadow mode and press 1 to group enemies as well as 3 to give damage vulnerability. You can either use light attack melee spam or heavy attack spam to kill groups of enemies.
6. If Shadow dies, simply use Sow + Reap again to recharge Death Well and re-enter Shadow mode.

SURVIVABILITY

Shield gating
[Sevagoth] has 335 base shields so [Catalyzing Shields] will reduce that to 67 shield. Reap costs 25, meaning you can restore 67.5 shield in one cast when running [Brief Respite] + [Augur Message] + TWO augur mods on your pistol. Sow can fully reset in one cast but is NOT spammable on demand.

Crowd Control
Gloom is one of the best crowd control abilities in the game, particularly as it gets close to slow cap as it basically prevents enemies from shooting. This affects demolysts and acolytes, but does NOT affect eximus/thrax who have Overguard active. Gloom will prolong any stuns created by other abilities (such as silence) or status effects (such as heat/electric) which will further prevent enemies from shooting. This allows you sufficient breathing room to shield gate once every while or roll out of harms way.

Shadow
Shadow sort of presents a get out of jail card when you have exhauted options eg you have run out of energy to shield gate and Gloom has deactivated, entering Shadow will give you an additional layer of shield gate/health with a crowd control ability. Shadow does not cost any energy to enter and also easily spawns with full energy due to [Preparation]. You can mix Shadow into your playstyle since its basically free to cast, gives some grouping, AOE damage vulnerability and can DPS with claws.

Passive
If you take fatal damage as [Sevagoth], you will activate your passive where Shadow pops out and you need to collect 5 souls as quickly as possible before shadow dies or the timer runs out. Basically spam 2 and target enemies as quickly as possible. You should be able to consume 2-3 souls within the initial i-frames and shield gate if-frames. Once you are vulnerable, use rolling guard and try to consume the remaining 2-3 souls within the i-frames of [Rolling Guard]. If arcane aegis procs, you're basically immortal for that duration so you can consume souls at leisure.

BUILD SPECIFICS

Duration
Duration affects both Reap and Sow but is not that important since you will often spam Reap and you do not want Sow to last forever since you cannot recast until ALL Sowed enemies are dead.

Duration also affects the drain of Gloom (to a lesser extent than efficiency), and is particularly important when efficiency is not 175% or higher. Duration does not affect Shadow but could be useful for helminth abilities with durations such as Silence, Nourish etc. You would want to keep this around 80 to 130%.

Efficiency
At least some efficiency is useful for reducing the drain of Gloom, although [Equilibrium] + decent kill rate and Synth Decontruct on a companion can deal with the drain of Gloom, meaning we can just sit 100% efficiency.

Range
Abour 145-175% range is the sweet spot for Gloom. Any higher and you run the risk of potentially getting enemies stuck beyond your visible range (i.e. in adjacent rooms) so they end up draining your energy unnecessarily while also reducing over kill rates. Range is also needed for the width of Reap and initial Sow radius.

Strength
Strength is needed for the damage vulnerability from Reap and most importantly the slow from Gloom. The slow cap of 95% is reached at 272% strength. With Molt Augmented active you will [Reach] 259% str which gives 91% slow. If you want to hit slow cap, you could use two 10% str archon shards, use Zenurik or Madurai, use Pax Bolt on a kitgun, use [Power Drain] or run [Growing Power] in aura.

Aura
Completely flexible but [Brief Respite] is required for more efficiency shield [Regen] for shield gating using Reap.
Other good options include [Enemy Radar], [Growing Power] (to hit Gloom slow cap), [Steel Charge] (for capacity).

Exilus
Completely flexible but [Primed Sure Footed] prevents knockdowns. Could use [Power Drift] to help hit gloom cap, [Cunning Drift] for slightly more range.

Flexible Slots
[Augur Reach] can be swapped out for an augment such as [Shadow Haze].

Arcanes
Arcane Energize helps significantly with energy economy since it basically provides an additional 600 energy/min (note Gloom drains 240 energy/min at maximum at these stats).
Molt Augmented gives 60% strength after 250 kills, greatly boosting gloom slow without taking up mod slots.
Molt [Vigor] is a good alternative to Augmented giving 45% strength for gloom, but not really benefiting the other abilities

Archon Shards
2 cast speed shards - speeds up swap animation to enter Shadow mode as well as reap/sow (not sure if this affects cast speed IN shadow).
2 power strength shards (optional) - lets you hit Gloom cap without additional mods or gimmicks
1-3 energy max shards - boosts sevagoths low base energy pool, potentially letting you drop [Primed Flow] entirely for something like [Augur Secrets]. 3 regular shards makes final energy pool 338 (compared to 541 with [Primed Flow]). 3 Tauforged shards makes final energy pool 413.

HELMINTH

If you want to use Shadow, you will want to subsume over 2, because 1 gives a damage vulnerability and is spammable to allow shield gating. You would want to pick an ability that provides some sort of boost TO shadow. This significantly limits the available options because you cannot cast buffs like Roar or Nourish while Shadow is separated from Sevagoth, so only passive aura type abilities work:

• Silence with [Savage Silence] augment: Silence creates a 2s stun which can be prolonged by Gloom up to a ridiculous 40s giving insane crowd control. Silence also blocks annoying eximus abilities (like arson fireblast and leech), annoying acolyte abilities (like violence/malice) and annoying enemy abilities (like [Disruptor] ancient hooks). Adding the [Savage Silence] augment also forces the 700% stealth melee multiplier (additive to final crit multiplier) for use with Shadow's Claws as long as silence is active and you remain in range of Sevagoth main body. Replace Augur Reach or Rolling Guard with the augment if you are using Shadow.

• Eclipse with [Total Eclipse] augment: Normally eclipse will only buff the caster. The augment buffs applies an aura so Shadow also receives the buff as long as it is active on [Sevagoth] and Shadow remains in range. The amount of damage buff also depends on the lighting in Shadow's current location, so this may become inconsistent.

If you DON'T use shadow, subsume the following over 4:

• Silence: for the reasons detailed above but without the Savage Silence augment.
• Nourish : boosts energy [Regen] to sustain gloom, taking damage releases brief stun which is prolonged by gloom and applies viral status to amplify damage