Telesto — Volatile Mine-Layer (Hunter)

Weapon: Telesto (Fusion Rifle · Special · Void) · Subclass: Nightstalker (Void) · Role: Add-clear / volatile chain-detonation engine Sandbox: 9.7.0 · Created 2026-06-16

Telesto doesn't fire a bolt, it plants one. Every shot sticks projectiles that hang for a beat and then go off as a delayed Void blast — a wall of floating mines you walk the room into. On Void Hunter you load those mines with Volatile Rounds off Gyrfalcon's, so every delayed detonation also detonates the volatile — two explosions per bolt, chaining through the pack. The whole trick: emerge invisible, paint the room with sticky Void mines, watch it cascade.

The weapon

Unplanned Reprieve (exotic perk): "Fusion projectiles attach and detonate with a delayed Void blast."

Telesto Catalyst — Deeper Pockets / Harbinger Seethe: "Deeper Pockets: Increased ammo reserves. / Harbinger Seethe: After activating Harbinger's Pulse multiple times, [Alternate Weapon Action] to cause a rain of projectiles on your next direct hit with this weapon." The catalyst's underlying perk is Harbinger's Pulse — "Multikills with Void damage immediately reload this weapon from reserves."

What it does: a single trigger-pull throws a burst of bolts that stick to whatever they hit (surface or body), pause, then erupt in staggered Void detonations. Against a clustered pack one shot is several overlapping blasts. Because the kills are Void multikills, Harbinger's Pulse reloads the gun from reserves for free — so Telesto self-sustains its own add-clear loop, and Deeper Pockets keeps the reserve pool deep enough to do it all encounter. Harbinger Seethe is the spike: stack Harbinger's Pulse reloads, then [Alternate Weapon Action] to make your next direct hit rain extra projectiles — a free burst-mine overload on a priority target.

Loadout

Slot	Pick	Why
Subclass	Nightstalker (Void)	The element matches the gun — Volatile and Devour both feed off Telesto's Void kills.
Super	Shadowshot: Deadfall	35% weaken + suppress + groups the pack into one spot — exactly where Telesto's mines want them, and weaken multiplies the blasts.
Class ability	Marksman's Dodge	Reloads on dodge (redundant with Harbinger's Pulse) and resets the Vanishing Step invis cycle on demand.
Melee	Snare Bomb	Cheap, throwable invis-on-detonation + weaken delivery; re-arms Gyrfalcon's Volatile without a kill.
Grenade	Vortex Grenade	Lingering Void zone; with Echo of Undermining it weakens, with Echo of Instability it re-grants Volatile.
Aspect 1	Vanishing Step	Dodge → invisible. The invis half of the Gyrfalcon's engine; `+2 Aspect Energy Capacity`.
Aspect 2	Stylish Executioner	Any elemental-debuffed kill → invisible + Truesight. Volatile/weaken kills (which Telesto makes nonstop) loop you back into invis hands-free.

Exotic — Gyrfalcon's Hauberk (Chest)

See Me, Feel Me: "Your Void weapons gain Volatile Rounds after you emerge from being invisible. When you are invisible and defeat a combatant while using a finisher, all of your weapons gain bonus damage; you and your nearby allies gain a reserve overshield and improved class ability regeneration. These reserve overshields can be deployed by using a class ability."

This is the build. Emerge from invis → Telesto's sticky bolts are now Volatile → every delayed Unplanned Reprieve detonation also pops a volatile burst, and volatile spreads on kill. One Telesto shot into a pack becomes a chain of doubled Void explosions. The finisher line bolts a fireteam overshield + damage buff on top for the hard rooms.

Why this works (the mechanics)

• Telesto is a Volatile delivery system, not a single gun. Unplanned Reprieve plants multiple delayed detonations per shot; Gyrfalcon's makes each of those a volatile detonation too. The bolts already explode — Volatile just doubles every explosion and lets it chain. No other Void weapon multiplies off Gyrfalcon's as hard, because no other Void weapon fires this many separate detonations per trigger-pull.
• The invis ↔ Volatile loop is self-closing. Vanishing Step gives invis on dodge → emerge → Volatile Rounds → Telesto's volatile blasts kill a debuffed pack → Stylish Executioner grants invis again (any elemental-debuffed kill) → emerge → Volatile refreshed. You re-arm Volatile by using it. Snare Bomb and Echo of Instability are backup arms for when you can't be bothered dodging.
• The gun reloads itself. Harbinger's Pulse: Void multikills → instant reload from reserves. Telesto's whole job is Void multikills, so it never stops to reload mid-clear, and Deeper Pockets keeps the reserves deep enough to never run dry. Marksman's Dodge is a redundant backup reload.
• Weaken is the force-multiplier and the Devour fuel. Deadfall (35%), Snare Bomb, and Undermining'd grenades all weaken — weaken is a debuff-bucket multiplier that boosts every detonation for the whole fireteam, and every weakened kill (Echo of Harvest) spawns an Orb + Void Breach → Echo of Starvation turns that into Devour (full heal + grenade refund on kill). The add-clear pays for its own survivability.
• Special ammo, infinite uptime. Telesto is a Special fusion — but between Harbinger's Pulse reloads, Deeper Pockets reserves, and Special-ammo economy mods, you're never starved. It plays like a primary add-clear tool that happens to hit like a heavy.

Stats & mods

Weapons 200 → Class 100+ → Super. Weapons stat scales Telesto's PvE damage vs minors/majors directly (9.7.0). Class high to keep Marksman's/Vanishing Step dodge — the invis cycle — on a short cooldown. Super third to feed Deadfall.

Archetypes: a Weapons/Class-favoured set (e.g. Gunner/Specialist pieces); set bonus is garnish only — pick rolls first.

Mods:

• Helmet: Harmonic Siphon (Void kills → Orbs — Telesto floods these) · Heavy Handed / Ashes to Assets for ability return.
• Gauntlets: Fusion Rifle Loader ×1–2 · Fastball (Snare Bomb placement).
• Chest: Arc/Solar/Void Resistance under the overshield + Devour layers.
• Boots: Void Weapon Surge ×2 (≈+17% Void weapon damage straight onto Telesto) · Orbs of Restoration (orb pickup → least-charged ability).
• Class item: Powerful Attraction (dodge vacuums orbs into Devour/Starvation) · Reaper (dodge → next kill spawns an extra Orb).
• Special-ammo: Special Finisher / Special ammo finder to keep reserves topped beyond Deeper Pockets in long encounters.

Where it shines

• Add-dense PvE: strikes, GMs, dungeons, Onslaught — anywhere enemies cluster. One stuck-mine shot wipes a pack; volatile chains finish the stragglers. This is a premier add-clear loadout, not a boss-DPS one.
• Champion coverage — flag. The manifest does not state Telesto's fusion frame (Precision/Rapid-Fire/etc.) or RPM, so its Anti-Champion 2.0 intrinsic stun is unconfirmed (see Verify). Telesto carries no bespoke champion stun in its perk text. Cover champions through the kit instead: Deadfall suppresses + Snare Bomb suppresses (Overload-style interrupt + weaken), weaken thins champion health for the team, and you should slot a secondary/heavy whose archetype carries the Barrier/Unstoppable stun you need for the activity.
• Survivability: Devour (Starvation) + Gyrfalcon's reserve overshield + invis (Vanishing Step / Stylish) — three layers, all fed by the same Void kills.

Mod selection (masterworked — full allocation)

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).