Arc

Delicate Tomb — Trace Engine (Arc Hunter)

Ionic-Trace battery that feeds Bolt Charge + permanent Amplified

Your gear best achievable Weapons 161 / 200 target — 39 short

Health 30 · Melee 46 · Grenade 63 · Super 23 · Class 38 · Weapons 161 · armour only; stat mods + fragments add more

✓ Manifest Arc · Special · No intrinsic champion

Centerpiece: Delicate Tomb (Fusion Rifle · Special · Arc) · Subclass: Arcstrider · Role: Ionic-Trace battery that feeds Bolt Charge + permanent Amplified Sandbox: 9.7.0 · Updated 2026-07-03

A free Exotic that does one rare thing: every kill makes Arc fuel. Delicate Tomb spits Ionic Traces on final blows, and the whole Arc 3.0 economy is built to eat Traces — they grant Bolt Charge, they regen abilities, they keep you Amplified. Wrap the gun in Rain of Fire and the Tomb never stops firing, never stops charging, and never leaves the Amplified state. The gun is the build battery; everything else just spends what it prints.

The weapon

Traitor's Vessel (intrinsic): "Fires a wide horizontal spread when shot from the hip. Final blows with this weapon have a chance to generate Ionic Traces. Powerful foes and opposing Guardians always generate Ionic Traces."

Catalyst — Ionic Interment: "Collecting an Ionic Trace partially reloads the magazine from reserves."

It's a hip-fire-spread Arc Special Fusion whose kills print Arc pickups, and its catalyst turns each pickup back into ammo — a self-reloading loop the moment Traces are flowing. Powerful foes and opposing Guardians are a guaranteed Trace, so it scales up into hard content where most ammo engines dry out. The hip-fire spread makes it a close-range add-clear shotgun-fusion; aiming down sights tightens the bolt spread for a single target. Every Trace it makes is the input to the entire Arc Hunter kit below: collect a Trace and the mag tops itself up, so with bodies in the room you rarely touch the reload button, and the kills that keep it loaded are the same kills that feed Bolt Charge and Amplified.

Loadout

Slot	Pick	Why
Subclass	Arcstrider	Native Ionic-Trace → Bolt Charge → Amplified economy; the Tomb is the Trace source.
Super	Gathering Storm	Stick the staff into the pack/boss for a standing jolt field; jolted kills make more Traces via Spark of Ions.
Class ability	Marksman's Dodge	Reloads the Tomb on demand and arms Lethal Current's empowered melee.
Movement	Triple Jump	Extra air control to line up Rain of Fire air-dodges and reposition for hip-fire spread.
Melee	Combination Blow	Dodge → empowered melee chain; melee kills refund dodge → another on-demand reload.
Grenade	Storm Grenade	With Touch of Thunder, a roaming thundercloud — an extra jolt source feeding Spark of Ions Traces.
Aspect 1	Flow State	Defeating a jolted target makes you Amplified, which greatly speeds Tomb reload and dodge recharge.
Aspect 2	Lethal Current	After dodging, next melee has extra lunge, jolts the target and creates a damaging aftershock — manufactures the jolted targets Flow State and Spark of Ions want.
Fragments	Discharge · Ions · Amplitude · Beacons	Two extra Trace sources plus Amplified-payoff (Orbs + blinding explosions).
Exotic armour	Rain of Fire (Leg Armor)	Air-dodge = instant full reload of every weapon; Fusion final blows make you Radiant.
Weapons	Kinetic champion-stun primary + Heavy MG/Rocket	Cover the champion stun the Tomb lacks and the boss DPS its Special profile can't close.

Fragments

Spark of Discharge Arc weapon final blows → Ionic Trace, a second Trace source stacked on the Tomb's intrinsic
Spark of Ions jolted kill OR Bolt-Charge kill → Ionic Trace, closing the jolt→Trace loop
Spark of Amplitude rapid kills while Amplified → Orbs of Power
Spark of Beacons while Amplified, Arc Special/Heavy final blows → blinding explosion — the Tomb is an Arc Special, so it's free add-control + soft-stun on every Amplified kill

Why it works (the mechanics)

The gun is the fuel source, not just the damage. Delicate Tomb's intrinsic makes Ionic Traces on kills (always from powerful foes and opposing Guardians). Arc 3.0's entire defensive and offensive loop runs on Traces, so this is the rare weapon whose kills are the build's input resource. You don't farm uptime; you shoot adds.
Two Trace sources stack on the gun. The intrinsic prints Traces, and Spark of Discharge adds a second roll on every Arc weapon kill. Trace density goes from "sometimes" to "constant," which means the catalyst (Ionic Interment) keeps partial-reloading the mag off pickups — the Tomb self-feeds in any fight with bodies.
Traces → Bolt Charge, jolt → Traces — a closed ring. Lethal Current and Storm Grenade (Touch of Thunder) blanket the room in jolt; Spark of Ions turns every jolted kill into another Trace; collecting Traces builds Bolt Charge; Bolt-Charge kills also make Traces via Ions. The ring never empties while you're killing.
Permanent Amplified via Flow State. Defeating a jolted target grants Amplified. Your jolt is everywhere — melee, grenade, Super, Bolt Charge — so you're killing jolted things nonstop and Amplified stays pinned. Amplified greatly increases the Tomb's reload speed and makes you more resilient while dodging, and Rain of Fire wants you airborne and dodging.
Amplified turns the Tomb into a stun-and-blind add cannon. Spark of Beacons triggers on Arc Special/Heavy final blows while Amplified — the Tomb is exactly that — so every Amplified kill drops a blinding explosion. Blind is crowd control and the Arc soft-stun. Spark of Amplitude turns the rapid Amplified kills into Orbs of Power for the team.
Rain of Fire keeps it loaded for free and pays Radiant. Air-dodge is an instant full reload of every weapon plus the Fusion-kill Radiant buff. Between that and the catalyst's Trace-reload, you almost never see the reload animation, and Radiant stacks a flat weapon-damage buff on top of the whole Arc economy.

Stats & mods

Weapons 200 → Health → Class. Weapons maxes the Tomb's PvE output and reload/handling; Health is cheap survivability under near-constant Amplified damage resistance; Class feeds Marksman's Dodge (the reload + Lethal Current enabler) and Combination Blow refunds. This is a weapons/health archetype lean — grenade and Super come from the Arc loop, not the stat sheet.

Mods:

Boots: Arc Weapon Surge ×2/×3 (straight onto the Tomb) + Fusion Rifle Scavenger.
Arms: Fusion Rifle Loader — trims the reload the loop doesn't already cover.
Chest: resist mods to lean into the Amplified uptime; Special Ammo Finisher to keep reserves topped for the catalyst loop.
Class item: Orbs of Restoration (Orb pickup → ability energy) + Special Ammo Finder.
Surge: Arc Surge — all damage funnels through an Arc weapon and Arc abilities.
Anti-Champion: none intrinsic to the Tomb; source stun from the subclass (jolt + blind) and the paired kinetic frame's Anti-Champion mods.

Artifact — Tablet of Ruin

Pure Arc artifact that mainlines this build's two engines — Bolt Charge and Amplified — while turning the room-wide Jolt and Blind the Tomb already spreads into extra damage and Champion stun.

Picks (2/3/2):

Tier 1: Dielectric · Elemental Siphon
Tier 2: Flashover · Harsh Refraction · Gold From Lead
Tier 3: Particle Reconstruction · Defibrillating Blast

Dielectric grants Bolt Charge on Arc-debuffed kills and spawns an Orb plus a heal on rapid kills — it feeds the exact Bolt Charge and Orb loop the build runs on.
Elemental Siphon mints Arc elemental pickups on Arc/Kinetic final blows — extra Ionic Traces stacked on the Tomb's own intrinsic, feeding the Bolt Charge and Amplified battery.
Flashover pushes max Bolt Charge into Amplified plus harder-hitting bolts, locking in the permanent-Amplified state Flow State already chases.
Harsh Refraction buffs Trace Rifle damage against elementally-debuffed targets — situational here, since the Tomb is a Fusion, not a Trace Rifle. It only pays if you slot an Arc Trace Rifle, where the build's blanket Jolt/Blind makes nearly everything qualify; otherwise it's dead. Swap-candidate if you don't run one.
Gold From Lead lets Special pickups grant Heavy — the Special-hungry Tomb tops up your boss slot as you feed the catalyst.
Particle Reconstruction refills the mag from reserves on sustained Fusion Rifle damage — a literal Tomb reload mod stacking with the catalyst.
Defibrillating Blast converts Champion stun into max Bolt Charge with bolts that jolt and heal — the Champion payoff that feeds the jolt ring.

Where it shines

Add-dense PvE — GMs, Nightfalls, dungeons, Onslaught. Hip-fire spread melts packs at close-mid range; every kill is a Trace, so the more enemies, the more the economy snowballs.
-Power / high-tier content. Guaranteed Traces from powerful foes and minibosses mean the loop strengthens where other ammo engines starve.
Champion coverage: Delicate Tomb has no intrinsic champion stun (manifest champion field is empty). You cover champions with the subclass, not the gun — Blind (Spark of Beacons, the Arc soft-stun on Amplified kills) and jolt + Gathering Storm lock them down. Bring a kinetic/primary with a real Barrier or Unstoppable stun archetype for guaranteed coverage; the Tomb handles the room, not the champion's stun bar.

Verify notes

Manifest-confirmed weapon facts (`data/weapon_facts.json`): Delicate Tomb = Arc · Special · Fusion Rifle, champion breaker none (`champion: null`), RPM not stored (`rpm: null`). The build's original "Arc / Special" prose matches the manifest; no correction needed.
Intrinsic Traitor's Vessel quoted verbatim from `docs/encyclopedia/exotics.md:228-229`; catalyst Ionic Interment from `docs/encyclopedia/catalysts.md:45`.
Paired exotic Rain of Fire (Soaring Fusilier) quoted from `docs/encyclopedia/exotics.md:179`.
Aspects Flow State (`aspects.md:73`) and Lethal Current (`aspects.md:126`) and fragments Spark of Discharge/Ions/Amplitude/Beacons (`fragments.md:72,82,69,70`) verified against `docs/encyclopedia/`. Corrected: the loadout row for Lethal Current claimed it "blinds" — `aspects.md:126` gives only increased lunge, jolt, and a damaging aftershock (no blind); the blind in this build comes solely from Spark of Beacons.
Corrected: Harsh Refraction (`artifacts_structured.md:284`) reads "Trace Rifles do more damage to targets afflicted by elemental debuffs matching their element type" — it does not buff the Delicate Tomb (a Fusion Rifle), and the stated weapons row runs no Trace Rifle, so the pick is inert unless an Arc Trace Rifle is slotted. Rationale reworded to say so; pick left unchanged (it is a real Tier-2 Tablet of Ruin mod).
Radiant's ~10% weapon-damage figure and Amplified's exact reload/DR values are behaviour, not numbers printed in these encyclopedia lines — flag as manifest/tuning, confirm in-game. Spark of Discharge / Spark of Ions Trace chances are non-numeric in the manifest text.
Combination Blow is the named melee but was not in this encyclopedia snapshot's grep — it's a long-standing Arcstrider melee; confirm the exact name in-game or substitute any Arc melee that benefits from the dodge loop. RPM being `null` means the Tomb's charge-time/bolt cadence isn't a stored value here either.

Mod selection (masterworked — full allocation)

Piece	Mod · cost	What it does
Helmet (9/10)	Special Ammo Finder 3e	Increases the effect of all contributions towards the Special ammo meter.
	Special Ammo Finder 3e	Increases the effect of all contributions towards the Special ammo meter.
	Arc Siphon 3e fill	Rapid Arc weapon final blows create an Orb of Power.
Arms (6/10)	Utility Kickstart 3e fill	When your class ability energy is fully expended, your Armor Charge is consumed and you gain class ability energy for each Armor Charge used.
	Momentum Transfer 2e fill	Causing damage with a grenade reduces your melee cooldown.
	Fastball 1e fill	Increases grenade throw distance.
Chest (5/10)	Arc Resistance 1e fill	Reduces incoming Arc damage from combatants.
	Concussive Dampener 3e fill	Reduces incoming area-of-effect damage from combatants.
	Sniper Damage Resistance 1e fill	Reduces incoming damage from combatants that are at long range.
Legs (3/10)	Arc Weapon Surge 1e	Your Arc weapons gain a small bonus to damage while you have any Armor Charge. Your Armor Charge now decays over time.
	Arc Weapon Surge 1e	Your Arc weapons gain a small bonus to damage while you have any Armor Charge. Your Armor Charge now decays over time.
	Orbs of Restoration 1e	Picking up an Orb of Power grants a small amount of energy to your ability with the least energy.
Class Item (4/10)	Reaper 1e fill	Shortly after using your class ability, your next weapon final blow spawns an Orb of Power.
	Bomber 1e fill	Reduces grenade cooldown when using your class ability.
	Powerful Attraction 2e fill	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: Arc abilities. - **Anti-Champion:** none intrinsic to the Tomb; source stun from the subclass (jolt + blind); the paired kinetic frame's Anti-Champion mods.