Hold the trigger to paint a whole pack, release for a tracking burst that unravels everything marked — then the unravel chips, the kills drop Threadlings and Tangles, and the Threadlings unravel again. Final Warning is the one sidearm that hands you a Strand verb for free, so the whole build is built to recycle that unravel into more unravel. Swarmers turns every kill into a self-feeding Threadling that re-applies the debuff the gun already started.
The weapon
All at Once (intrinsic):"Holding down the trigger marks targets within range and loads multiple bullets, which fire in a burst with increased stability on trigger release. Hitting a marked target with a fully charged burst will unravel them."
Catalyst — String Theory:"Hits against marked targets deal increased damage and have a chance to refund ammo to the magazine."
Hold the trigger for ~0.5s to mark every combatant within 24 metres and load a burst of ten shots; release for a stable, tracking volley. A fully charged burst on a marked target applies Unravel — Strand's chip-damage debuff that spreads to nearby combatants and stacks under any weapon perk. Because Final Warning is a Primary-ammo sidearm it never runs dry, and the catalyst layers on top: marked hits deal +10% damage (5% to minibosses/bosses) and refund ammo straight to the mag (an 85% chance on Minors/Elites, 25% on tougher targets). So a marked pack simultaneously eats bonus damage and tops the magazine that kills it — the gun paints, unravels, and self-sustains in one hold-and-release rhythm, freeing the whole subclass to do nothing but multiply the unravel.
Loadout
Slot
Pick
Why
Subclass
Strand (Threadrunner)
The gun's unravel is a Strand verb; everything below recycles it.
Super
Silkstrike (rope dart)
On-theme roaming Super; grapple-dash mobility to reposition between marks.
Class ability
Marksman's Dodge
Reloads Final Warning on dodge — top the mag between bursts.
Movement
Strafe Jump
Tightest air control for hold-to-mark accuracy while repositioning.
Melee
Threaded Spike
Returns melee energy on catch; detonates and retrieves Tangles for Whirling Maelstrom.
Grenade
Threadling Grenade
Direct Threadling source on demand — with Swarmers each one unravels.
Aspect 1
Whirling Maelstrom
Destroy a Tangle → a writhing Strand mass that seeks targets and emits Unraveling projectiles on its kills.
Aspect 2
Widow's Silk
Second grenade charge (double the Threadling supply) and Grapple makes a Grapple Tangle — free Tangle for Maelstrom and Swarmers.
Stretch the unravel, refund grenades, spawn more Threadlings, backstop survivability.
Exotic armour
Swarmers (Legs) — "Destroying a Tangle spawns a Threadling. Your Threadlings unravel targets that they damage."
The keystone multiplier. See Why it works.
Weapons
A Strand primary (Allied Unraveling roll) + a Strand/Kinetic Machine Gun or GL
Surge-matched primary keeps unravel up and feeds Strand Siphon; Heavy covers boss/champion DPS the sidearm isn't built for.
Fragments
Thread of Continuity · Thread of Generation · Thread of Rebirth · Thread of Warding · Thread of Ascent
Why it works (the mechanics)
The gun manufactures the debuff the subclass wants. Final Warning exists to hand you "free unravel on a marked pack." Every other Strand Hunter spends an aspect or melee to apply unravel; here the trigger does it. A fully charged burst on marked targets applies Unravel outright, so the rest of the kit does nothing but multiply and recycle it rather than manufacture it.
Swarmers is the multiplier — Threadlings unravel. Kills off an unravelled pack (plus your Threadling Grenade and Thread of Rebirth) drop Tangles and Threadlings; Swarmers spawns two Threadlings per destroyed Tangle and makes them unravel targets they damage (5s, or 7.5s with Continuity). So: gun unravels → kill → Threadling → it unravels a fresh target the gun never marked. The debuff outruns your trigger finger.
Whirling Maelstrom closes the Tangle loop. Destroy a Tangle — Threaded Spike detonates them, Grapple makes one via Widow's Silk, kills drop them — and the Maelstrom seeks targets and emits Unraveling projectiles when it defeats them. That's a third independent unravel source roaming the room while you reload.
The catalyst self-feeds a Primary that already never runs dry. String Theory gives marked hits +10% damage and refunds ammo to the mag (85% on Minors/Elites). On a Primary weapon this means you effectively never reload mid-fight against a marked pack, so the hold-mark-burst cadence never breaks for ammo.
Weapons stat double-dips on the same kills (9.7.0). The Weapons stat raises weapon damage vs minors/majors and reload/handling. Thread of Ascent (+10 Weapons) plus high-Weapons gear stacks PvE damage on top of the catalyst's marked-hit bonus and the unravel chip — three damage sources from one burst.
Continuity is the glue. Thread of Continuity stretches every Strand debuff ~50% longer, so a single marked burst keeps a whole pack unravelled long enough for Threadlings and the Maelstrom to clean up. The debuff becomes persistent, not per-shot.
Stats & mods
Weapons 200 → Grenade → Health. Weapons leads because the build's damage is weapon damage plus unravel chip; Grenade funds the second Widow's Silk Threadling charge; Health with Thread of Warding's Woven Mail covers survivability. Lean on the standard grenade-uptime archetype (Weapons/Grenade split with a Health floor).
Mods:
Boots: Strand Scavenger · Elemental Charge — keep the Strand primary fed and bank Armor Charge off Orbs.
Arms: Strand Loader — faster reloads bridge the catalyst refund on tougher targets.
Chest: Elemental resist mods (Strand/Arc/Solar) stacked under Woven Mail.
Class item: Powerful Attraction (dodge vacuums Orbs) · Bomber for grenade uptime.
Surge: Strand Surge ×2 (≈+17% Strand weapon damage onto Final Warning and your Strand primary).
Anti-Champion: artifact/seasonal anti-champ mods — Final Warning has no intrinsic champion stun, so Barrier/Unstoppable/Overload coverage must come from the artifact or your other weapons.
Artifact — Queensfoil Censer
The Strand-leaning artifact pours fuel straight into Final Warning's loop: it converts the Orb/Tangle flood into bonus unravel, extends the gun's debuff, and spawns more Threadlings off unravelled targets — while Revitalizing Blast and Dragon's Bite backstop the champion answers the sidearm doesn't carry itself.
Wished into Being spawns Orbs from ability final blows while your Super is nearly full, fattening the Orb economy that Powerful Attraction and Strand Siphon feed.
Torch grants bonus weapon damage while radiant against Strand- and Stasis-debuffed targets — i.e. everything Final Warning unravels.
Unraveling Orbs turns Orb or Tangle pickup into Unraveling Rounds on Strand weapons — a second, independent unravel source running on Final Warning itself between charged bursts.
Dragon's Bite gives Strand-weapon shield-breaks a chance to suspend or freeze, adding the hard stop the kit leans on and a partial champion answer.
Revitalizing Blast makes a stunned Champion ignite and clears your shield stun — the payoff once an artifact anti-champ mod does the stunning.
To Shreds unravels severed targets under sustained damage and drops a Strand hotspot for Woven Mail, stretching the debuff past one burst.
Horde Shuttle spawns severing Threadlings from damaging unravelled targets — the gun → unravel → Threadling multiplier this whole build is built around.
Where it shines
Ad-dense PvE (GMs, Legend/Master, Onslaught, dungeons): hold-to-mark plus burst is a literal AoE-debuff button; Swarmers and the Maelstrom turn each kill into more unravel, so dense rooms collapse on themselves. This is the build's home.
Majors and minibosses: the catalyst's marked-hit damage, the Weapons stat, and unravel chip melt orange bars in a burst or two, and the ammo refund means you never stop firing at them.
Champion coverage: Final Warning breaks no champion type intrinsically (manifest champion = none). Lean on the artifact — Revitalizing Blast plus an anti-champ mod, Dragon's Bite's suspend/freeze — and on your Strand primary's frame for Barrier/Unstoppable/Overload. Suspend (Silkstrike, Dragon's Bite) hard-stops elites regardless, and unravel thins champion health for the team.
Mod selection (masterworked — full allocation)
Piece
Mod · cost
What it does
Helmet (5/10)
Strand Siphon1efill
Rapid Strand weapon final blows create Orbs of Power.
Ashes to Assets3efill
Gain bonus Super energy on grenade kills.
Heavy Ammo Finder1efill
Increases the effect of all contributions towards the Heavy ammo meter.
Arms (9/10)
Strand Loader3e
Increases reload speed of Strand weapons.
Strand Loader3e
Increases reload speed of Strand weapons.
Utility Kickstart3efill
When your class ability energy is fully expended, your Armor Charge is consumed and you gain class ability energy for each Armor Charge used.
Chest (6/10)
Strand Resistance2efill
Reduces incoming Strand damage from combatants.
Concussive Dampener3efill
Reduces incoming area-of-effect damage from combatants.
Sniper Damage Resistance1efill
Reduces incoming damage from combatants that are at long range.
Legs (7/10)
Strand Scavenger3e
Strand weapons get bonus reserves when picking up ammo used by that weapon.
Elemental Charge1e
Collecting an Elemental pickup or destroying a Tangle has an escalating chance to give you Armor Charge.
Strand Weapon Surge3efill
Your Strand weapons gain a small bonus to damage while you have any Armor Charge. Your Armor Charge now decays over time.
Class Item (4/10)
Bomber1e
Reduces grenade cooldown when using your class ability.
Bomber1e
Reduces grenade cooldown when using your class ability.
Powerful Attraction2e
Automatically collects nearby Orbs of Power when you activate your class ability.
All 15 sockets used, 10 energy per masterworked piece; costs from the manifest. Core mods are the build's engine; fill mods are strong defaults — swap freely (chest resists should match the activity's damage types). Flex/loadout-dependent: your Strand primary). - **Anti-Champion:** artifact/seasonal anti-champ mods — Final Warning has **no intrinsic champion stun**; so Barrier/Unstoppable/Overload coverage must come from the artifact or your other weapons.