A one-shot handheld GL that paints the floor in front of a pack with three sweeping energy waves — and because Dead Messenger fires the element of your subclass, on a Void Hunter it runs Void. Match your grenade to Void and every wave-kill stacks Verity's Brow Death Throes: more grenade damage, more grenade energy, then throwing the grenade reloads the gun. Grenade kills hand the GL Volatile Rounds; weakened kills print orbs, Devour and invis. The launcher is the trigger and the payout in one trade.
The weapon
Trinary Vision (intrinsic): "One-shot handheld Grenade Launcher. Projectiles release a fan of three energy waves on contact with the ground."
Catalyst — Turnabout: "Using this weapon to break the shield of a combatant or a Guardian using their Super will grant you an overshield."
Fire at the floor in front of a pack and the projectile bursts into a fan of three ground-hugging waves that sweep through everything in a wide arc — the same wave-frame geometry as a heavy wave-frame GL, but on a Special one-shot exotic. Trinary Vision reads "energy waves" with no fixed element because Dead Messenger's damage type tracks your equipped subclass; on Nightstalker that is Void, which is the entire reason this pairing exists — one weapon that both match-elements to Verity's Brow and procs the build's Void-keyed perks. The frame is a 72 RPM Special GL, so the trade is a whole pack cleared for a single shot, then a reload you pay for with your grenade. The catalyst is pure sustain: break a shield or tag a super-active Guardian and you get a free overshield with no setup.
Loadout
Slot
Pick
Why
Subclass
Nightstalker (Void)
Makes Dead Messenger fire Void, so it matches the Void grenade for Verity's and procs the Volatile/weaken loops.
Super
Shadowshot: Deadfall
Tethers group the pack into the wave's arc, weaken for the fireteam, and suppress covers Overload-style ability spam.
Class ability
Gambler's Dodge
Refunds melee near enemies and, with Vanishing Step, is on-demand invis between waves.
Movement
Triple Jump
Air control to set the floor-angle the waves want to sweep along.
Melee
Snare Bomb (Quickfall)
On-demand weaken + invis smoke; seeds Stylish/Harvest while the GL is reloading.
Grenade
Vortex Grenade
Void (matches the GL for Death Throes), lingers for grenade-kill procs, and weakens via Undermining.
Aspect 1
Stylish Executioner
Any weakened, suppressed or volatile kill grants invis + Truesight — every Volatile-Rounds wave-kill triggers it.
Aspect 2
Vanishing Step
Dodge grants invis, so Stylish/Harvest stays lit without a kill first — safety between reloads.
Fragments
Instability · Undermining · Harvest · Provision
Volatile source, weaken delivery, orb/breach economy, and melee recharge off the grenade.
Exotic armour
Verity's Brow (Helmet)
Void weapon kills matching the Void grenade grant Death Throes (grenade damage + grenade energy); throwing the grenade reloads the GL and hands allies grenade regen.
Weapons
Void Primary w/ Destabilizing Rounds (keeps Death Throes topped, spreads volatile) + Machine Gun or wave-frame Heavy GL (the DPS/boss slot the Special GL can't carry).
The GL is the centrepiece; the Primary feeds Death Throes between shots, the Heavy handles bosses.
Fragments
Echo of InstabilityVoid grenade kills grant Volatile Rounds on your Void weapons — i.e. on Dead Messenger
Echo of UnderminingVoid grenades weaken — turns Vortex into a weaken delivery feeding Harvest/Stylish
Echo of Harvestweakened kills create Orbs of Power + Void Breaches
Echo of Provisiongrenade damage recharges melee energy — refills Snare Bomb off the same Vortex
Why it works (the mechanics)
Element-matching is the whole engine. Dead Messenger fires Void on a Void subclass, and Verity's Brow rewards weapon kills whose damage type matches your grenade. Set grenade = Void (Vortex) and every wave-kill stacks Death Throes — a grenade-damage bonus (Clarity: 40/55/70/85/100% at x1–5 in PvE) plus grenade energy. One shot can wave-kill a whole pack, so a single trigger-pull can jump you multiple stacks — the cleanest Death Throes feed in the game.
Throwing the grenade reloads the gun. Verity's loop closes on itself: GL wave-kills stack Death Throes, you throw the now-buffed Vortex, and Verity reloads Dead Messenger from reserves while handing nearby allies grenade regen. The one-shot GL's biggest weakness is its mag of one; the grenade is its reload.
Grenade kills weaponise the GL. Echo of Instability turns any Void grenade kill into Volatile Rounds on your Void weapons — so right after the Vortex kills, the next Dead Messenger waves are volatile, detonating on contact for chained AoE across the pack.
Volatile plus weaken make every wave a Stylish trigger. Stylish Executioner fires on weakened, suppressed or volatile kills, and this build manufactures all three — Undermining weaken, Deadfall/Snare suppress, Instability volatile. Every wave that kills grants invis + Truesight, with Vanishing Step as the no-kill backup.
The orb and Devour layer is free. Echo of Undermining weakens via Vortex; Echo of Harvest turns weakened kills into Orbs of Power + Void Breaches; picking up a breach (with Devour from Deadfall/Stylish-adjacent play) self-heals you. The GL's pack-kills are what print the orbs the fireteam runs on.
Provision keeps the melee up for free. Echo of Provision refunds melee energy off grenade damage — the same Vortex that feeds Death Throes also refills Snare Bomb, so the on-demand weaken/invis smoke is always available between reloads.
Stats & mods
Grenade 200 → Class → Weapons. Grenade is the entire economy — it is the reload, the weaken, the Volatile source and the Death Throes button — so it caps first. Class keeps Gambler's Dodge / Vanishing Step on a short leash; Weapons pushes GL and Primary damage. Archetype lean: Gunner (Weapons + Grenade) or any piece favouring Grenade. Health is the dump stat — Devour, Snare invis and the catalyst overshield cover survivability.
Arms: Grenade Launcher Loader · Fastball (lands Vortex where the waves will sweep).
Chest: Arc/Solar/Void Resist (one each) — flat DR under Devour/overshield.
Class item: Grenade Kickstart (spend Armor Charge for grenade energy when Vortex is empty) · Powerful Attraction (dodge vacuums the orbs Harvest prints).
Surge: Void Weapon Surge — the whole kit is Void.
Anti-Champion: none intrinsic to the GL — route it through Deadfall suppress + your Primary/Heavy archetype mods (see below).
Artifact — Slayer Baron Apothecary Satchel
Pure Void synergy for a Void Nightstalker GL: this artifact stacks a Void Breach engine on top of Devour, refunds the one-shot GL straight off shield-breaks and champion hits, and turns weakened kills into the Devour/Orb economy the build already runs. Champions stay on Deadfall suppress + your Primary/Heavy archetypes.
The Thick Of It builds Armor Charge while surrounded — feeds the build's Grenade Kickstart so the Vortex comes back even when the GL isn't wave-killing.
Power From Pain grants Devour and creates a Void Breach on rapid final blows against weakened targets — exactly the Undermining/Harvest layer the build already sets up.
Void Renewal generates Void Breaches on Void weapon final blows while Devour is active — the core breach feed off Dead Messenger's pack-kills.
Weakened Clear reloads your stowed weapons and weakens the target when you use the GL to damage a boss/Champion or break a shield — free reloads for your Primary/Heavy plus extra weaken feeding Stylish/Harvest.
Curative Orbs makes an Orb of Power when you break a shield with the catalyst — pays off the GL's shield-breaks on top of the overshield.
Supernova turns your next Void damage into a weakening pulse after you pick up a Void Breach — more weaken to feed Stylish/Harvest.
Old God's Rite rains seeking Void projectiles after a breach — extra add-clear off every breach the GL prints.
Where it shines
Add-dense PvE (GMs, Onslaught, legend/master lost sectors, seasonal): the three-wave fan plus Volatile detonations clear packs in a shot, Death Throes keeps the grenade always-up, and weakened-kill orbs feed the team. This is the build's home.
Boss/DPS: not its lane — a Special one-shot wave GL is add-clear, not a damage phase. The Heavy (MG or wave-frame Heavy GL) is your DPS slot.
PvP: off-meta; the catalyst overshield on shield-break is a niche duel tool, but this is a PvE build.
Champion coverage: Dead Messenger breaks nothing intrinsically — weapon_facts.json lists no champion breaker and Trinary Vision carries no "Strong against" clause. Deadfall's suppress handles Overload-style ability spam and the 35% weaken thins champion health; bring a Barrier/Unstoppable Primary (per Anti-Champion 2.0) and a Heavy for the actual stuns. Run the GL for the adds, not the champion.
Mod selection (masterworked — full allocation)
Piece
Mod · cost
What it does
Helmet (7/10)
Void Siphon3efill
Rapid Void weapon final blows create an Orb 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 (5/10)
Fastball1e
Increases grenade throw distance.
Fastball1e
Increases grenade throw distance.
Grenade Kickstart3e
When your grenade energy is fully expended, your Armor Charge is consumed and you gain grenade energy for each Armor Charge used.
Chest (5/10)
Void Resistance1efill
Reduces incoming Void 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 (9/10)
Void Weapon Surge3e
Your Void weapons gain a small bonus to damage while you have any Armor Charge. Your Armor Charge now decays over time.
Void Weapon Surge3e
Your Void weapons gain a small bonus to damage while you have any Armor Charge. Your Armor Charge now decays over time.
Void Weapon Surge3efill
Your Void weapons gain a small bonus to damage while you have any Armor Charge. Your Armor Charge now decays over time.
Class Item (5/10)
Powerful Attraction2e
Automatically collects nearby Orbs of Power when you activate your class ability.
Powerful Attraction2e
Automatically collects nearby Orbs of Power when you activate your class ability.
Reaper1efill
Shortly after using your class ability, your next weapon final blow spawns an Orb of Power.
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).