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.

UPDATE JUNE 2024
[Sevagoth] is currently one of the strongest zero effort nuke frames that can nuke up to levelcap. Enemies affected by Sow who are then subsequently hit by Reap take true damage equal to 25% of their CURRENT health. Dark Propagation allows Sow to self-propagate and thus allows the true damage effect to spread itself across a map. This value is NOT affected by ability strength, but is affected by Reap's vulnerability buff (50% at 100% strength), Viral (2x at 1 stack and 4.25x at 10 stacks) and Roar (30% at 100% strength). Note, [Dark Propagation] also allows Shadow's 3 to create Sow, and [Shadow Haze] allows new shadows to be produced on kills, meaning you can perform this same nuke while in Shadow form too, although it is limited by the lack of access to on demand Reap casts.

WITH ROAR (over 4): You need at least 255% strength with both Reap and Roar active on an enemy to allow the next Sow+Reap combo to trigger a 100% current health loss to one-shot an enemy, without needing viral status
WITHOUT ROAR: You will need at least 200% strength on a Reap with exactly 1 viral status on an enemy to oneshot without Roar.

In general we subsume over Shadow since 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
• Many helminth abilities become useless in Shadow, or do not directly affect shadow (e.g. roar, nourish, warcry)
• Takes another 5 extra forma to maximise due to being a whole frame + melee you need to consider.

If you want to actually 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
3. Cast Reap to kill enemies marked by Sow (through dealing true damage and causing blast explosions) and mark them with damage vulnerability and flat crit chance buff from Shadow Haze.
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.

To one-shot with Roar active, you can either press 1 2 1 or 2 1 1.

SURVIVABILITY

Shield gating
[Sevagoth] has 335 base shields so [Catalyzing Shields] will reduce that to 67 shield. Reap costs 25 energy and Brief respite alone generates 37.5 shield, which is equal to approximately 0.7s i-frame while Sow costs 50 energy generating 75 energy fully resetting 1.33s shield gate. Adding augur mods onto your pistol can give you additional i-frames per cast. Simply spamming Reap and Sow constantly will keep you alive without much thought.

Secondary Fortifier
Using a secondary primer or DPS with Secondary Fortifier arcane allows you to steal overguard from eximus and thrax. Overguard makes you immune to status, clears any existing status upon gaining overguard and gives an additional 0.5s i-frame gate on breaking. This is excellent quality of life and can make you even harder to kill.

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 cold/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.

Additional sources of crowd control include a sentinel such as Diriga with Duplex Bond and modded with radiation status, specters and on-call crew.

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 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.

Tanking Alternative
If you strongly dislike shield gating playstyles and never plan on playing endurance

BUILD SPECIFICS

Duration
Duration affects both Reap and Sow but is not that important since [Dark Propagation] allows Sow to self propagate and Reap has a decent base duration (6s flight time, 10s debuff)

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
About 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. A bit of range is also needed for the radius of Death harvest debuff from Reap and Sow radius.

The true damage component only affects enemies hit DIRECTLY by shadows. The radial component is blast damage and doesn't scale with range either. Range does affect Sow but since [Dark Propagation] allows it to self propagate, you don't need much range to get this going. Range is needed for Gloom so keep range at least 145, can go up to 175 if you prefer.

Strength
Strength is needed for the damage vulnerability from Reap, flat CC buff from [Shadow Haze] and the slow from Gloom. The slow cap of 95% is reached at 272% strength, which can be hit with several different combinations. Strength does NOT affect the % health from Reap however will affect Reap's damage vulnerability and roar if you subsume this, which both in turn affect % health damage. You need a minimum of 255% strength to one-shot 100% of the enemies health after an initial reap contact.

For Roar builds, to hit one-shot you can use the following options:

• FULL shards NO kills to buildup: [Transient Fortitude] (55%) + FOUR Tauforged Strength (60%) + Madurai (40%). This is the best option for quick missions where you don't want to build up Molt Augmented before achieve one shot
• FULL shards, needs kills to buildup: Molt Augmented (60%) + FOUR Tauforged Strength (60%) + Madurai (40%). This is the best option for endurance where you will get 250 kills easily, and can free up the Transient Fortitude slot for additional quality of life like Rolling Guard.
• NO shards, needs kills: [Transient Fortitude] (55%) + Molt Augmented (60%) + Molt [Vigor] to snapshot Roar (45%) + Zenurik (20%) OR Madurai (40%)

Aura
Completely flexible but [Brief Respite] is required 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
[Transient Fortitude] is flexible for [Rolling Guard] in solo endurance against Grineer, up to personal preference, as long as you have four Tauforged Strength shards and are running both Madurai and Molt Augmented and keep them constantly active to hit 260% strength.

Arcanes
Molt Augmented gives 60% strength after 250 kills, greatly boosting strength without taking up mod slots but needing 250 kills to build up.
Molt [Vigor] gives another 45% strength which can be snapshot by Gloom and Roar. Optional in case you don't own any shards yet.
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).

Archon Shards
1 tauforged cast speed shard - speeds up animations to make frame feel more fluid
4 tauforged crimson power strength shards - gives 60% strength allowing you to hit both Gloom threshold (272%) and one-shot Reap/Sow threshold (255%) with roar, while freeing up a mod slot (Transient Fortitude) or arcane slot (Molt Vigor)

HELMINTH

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

• Roar: boosts Reap %HP, allowing one-shots without viral
• 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

If you want to use Shadow with a helminth, you will want to subsume over 2, because 1 gives a damage vulnerability and is spammable to allow shield gating. You will also need to drop [Dark Propagation] for more strength. 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.