Passive[]
Shifting their pieces unpredictably, 
Xaku has a 25% Dodge chance to harmlessly phase through incoming enemy weapon attacks, while protected by a 25% Damage Reduction against area of effect damage. Passive dodge chance and area damage reduction both raise to 75% while 
The Vast Untime is activated.
- Enemy attacks affected by the dodge passive include hitscan, bullets, projectiles, and melee attacks. Explosions that occur near Xaku are not dodged, instead Xaku will receive damage reduction against them.
- Evasion (such as from
Agility Drift) and Xaku's dodge chances are separate mechanics that do not stack.
Abilities[]
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 1  25
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Xata's Whisper Wield Void damage for all attacks from equipped weapons when activated. Introduced in Update 29.0 (2020-08-25) |
 Strength:17 / 23 / 23 / 26 % ( Void damage bonus)
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 Duration:20 / 30 / 30 / 35 s
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 Range:N/A
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Misc:
1 (extra hit per damage instance) | |||
| Subsumable to Helminth |
Info
- Whispers from the Void infuse Xaku with untold power, expending
25 energy to empower all equipped Weapons to inflict 1 extra hit per damage instance for 17% / 23% / 23% / 26% of total weapon damage as Void damage. Xata's Whisper lasts for 20 / 30 / 30 / 35 seconds.
- Casting Speed is affected by Natural Talent and Speed Drift.
- The extra Void damage hit can remove Sentient and Shadow Stalker's damage adaptation resistances upon triggering a Status Effect.
- Extra hit per damage instance does not provide extra Melee Combo or Sniper Rifle combo gain.
- Xata's Whisper duration appears on the ability icon, as well as beside Xaku's shield and health indicators as a buff icon with the damage bonus and timer.
- Casting Speed is affected by
- Xata's Whisper Void damage is based on a percentage of the total weapon damage.
- Damage bonus is a separate damage instance, and does not dilute weapon elements.
- Affected by base, elemental, critical, and faction damage mods (e.g. Serration, Hornet Strike, Pressure Point, Convulsion, Cleanse Grineer, Vital Sense, etc)
- Faction Damage Mods, after first applying to your weapon, will multiply the damage bonus a second time, effectively double-dipping.
- The ability double dips on faction damage, and body part weaknesses.
- Xata's Whisper can proc the Void Status Effect based on the weapon's total status chance.
- The bullet attractor turns enemy projectiles towards themselves, effectively reflecting damage. This even applies to hit-scan weapons, which cannot exit the bubble.
- The Void damage applies to most weapon hits, including Acid Shells and Concealed Explosives, but not Bursting Mass or Pathocyst's maggots.
- Since the damage bonus is not applied to the weapon directly, and only activates on-hit, it will not be absorbed into Bursting Mass.
- Since the damage bonus is not applied to the weapon directly, and only activates on-hit, it will not be absorbed into
- The Void damage bonus does not allow Xaku's weapons to damage Eidolon Shields of the Eidolon Teralyst, Eidolon Gantulyst and Eidolon Hydrolyst, nor the ghostly energy form of the Eidolon Vomvalyst, nor the Thrax Centurion or Thrax Legatus enemies from the Zariman Ten Zero.
- Damage is affected by Ancient Disruptor auras and other enemies that reduce ability damage, unlike other weapon buffing skills.
- Ability Synergy:
- Grasp of Lohk Void replicas and The Lost's sub-abilities do not benefit from the additional Void damage bonus of Xata's Whisper.
- The Vast Untime renders enemies 50% more vulnerable to Void damage and pauses Xata's Whisper's duration timer while active.
- Can be recast while active to refresh the duration.
- Casting Xata's Whisper is an upper-body animation that allows movement while restricting other actions.
- On cast, Xaku's right shoulder and arm pieces visually detach then return to position. While active, Infested grey matter envelops their entire body as the Void veins pulse and glow with energy, while surrounded by a Void energy cloud near the torso.
- Subsuming Xaku to the Helminth will offer Xata's Whisper and its augments to be used by other Warframes.
Tips & Tricks
- When fighting against Sentients, it is recommended to use and mod weapons with high status chance, in order to efficiently reset their damage resistances.
- Recast the ability to refresh its duration or activate The Vast Untime to pause Xata's Whisper's duration timer, effectively prolonging the buff on Xaku as a semi-permanent damage bonus for all equipped weapons.
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 2 50
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Grasp of Lohk Void Tendrils steal weapons from nearby enemies to use as your own floating, auto-targeting armament. Damage output increases based on enemy level. The number of weapons grabbed also determines the damage multiplier for The Lost: Deny's Void beam. Introduced in Update 29.0 (2020-08-25) |
Strength:20 / 30 / 40 / 50 ( Void scaling damage)
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| Duration:5 / 7 / 9 / 12 s
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| Range:6 / 9 / 12 / 15 m (grab range) 5 / 6 / 7 / 8 m (target range) 3 / 4 / 5 / 6 (max targets) | |||
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Misc:
1/s (fire rate) |
Info
- Breach through the Void to summon a mass of grasping tendrils, expending 50 energy to Disarm up to 3 / 4 / 5 / 6 enemies within a radius of 6 / 9 / 12 / 15 meters from Xaku. Disarmed enemies resort to using melee weapons, whilst their stolen ranged weapons transform into Void replicas that hover and follow Xaku for 5 / 7 / 9 / 12 seconds. Void replicas automatically target enemies within direct Line of Sight and a radius of 5 / 6 / 7 / 8 meters from Xaku, shooting a Void beam with a average fire rate of 1 shot per second, each inflicting 20 / 30 / 40 / 50 Void scaling damage with a ?% Stagger chance to light units. If cast on a weaponless or disarmed enemy, a Void replica of Xaku's primary weapon or a Void orb in the absence of a primary, orbits Xaku instead.
- Damage is affected by Ability Strength and level of the targets disarmed by the ability, according to the following formula:
- Total Void Damage = Void Damage × (1 + Ability Strength) × Enemy Level
- The max number of stolen weapons is rounded down to the whole number multiple of the range modifier, and the base number; e.g. with 115% ability range, the number of stolen weapons is 6 × 115% = 6.9, which is rounded down to 6. An ability range of 130% would be 6 × 130% = 7.8, which rounds to 7. The max number of stolen guns normally achievable by this method is 16, achieved with an ability range of 267%, slightly below the normal max of 280%. If max range is increased beyond normal levels by some means, this number will increase accordingly.
- Casting speed is affected by Casting Speed.
- Heavy units such as Heavy Gunner are immune to the stagger effect.
- Xaku does not require line of sight to enemies to disarm them and steal their weapons. However, Void replicas themselves do require line of sight to target and fire at enemies, regardless if Xaku sees the targets or not.
- Void damage from Void replicas do not reset Sentient damage resistance.
- Void replicas will only target an enemy's torso when firing their Void beams.
- Void replicas do not attack Invulnerable enemy targets.
- The number of active Void replicas is displayed as an icon beside Xaku's shield and health indicators.
- Damage is affected by
- Ability Synergy:
- Xata's Whisper does not grant additional Void damage to Void replicas.
- Grasp of Lohk can disarm and steal the weapons of enemies affected by all sub-abilities of The Lost.
- Void replicas will not attack enemies corrupted by Accuse, unless affected by Radiation status effect or other faction modifier abilities (e.g. Chaos).
- Void replicas will not attack an enemy trapped by Gaze.
- Void replicas amplify Deny's damage, based on the number of stolen weapons hovering around Xaku.
- Void replicas will not attack enemies corrupted by Accuse, unless affected by
- The Vast Untime renders enemies 50% more vulnerable to Void damage from Void replicas and pauses Grasp of Lohk's duration timer while active.
- Can be recast while active if under the max stolen weapons target cap. Recasting disarms new enemies and steals new Void replicas adding up to the cap, with each new gun under a separate full ability duration.
- Cannot be recast while at max amount of stolen weapons.
- Void replicas' visuals will gradually fade to black as they near their expiration point.
- Casting Grasp of Lohk is an upper-body animation that allows movement while restricting other actions.
- On cast, Xaku's chest, shoulder, arm, and thigh pieces visually detach then return to position. A vertically splitting Void breach appears directly in front of Xaku, as Void tendrils reach out in multiple directions, then retreat back into the quickly closing breach.
- Void replicas appear in the shapes of the stolen weapons, blackened and pulsate with Void energy. Replicas hover on other side of the player camera to avoid obscuring vision during aim, occasionally twitch in a glitching-like fashion, and rotate themselves to face nearby enemies.
- Void entity object resembles a dark sphere with swirling Void energy torrents encircling it.
Augment
- Main article: Vampiric Grasp
Vampiric Grasp is a Warframe Augment Mod for Xaku's 
Grasp of Lohk that heals them when a stolen weapon deals damage to an enemy affected by 
Gaze or The Vast Untime.
Tips & Tricks
- Equip radar mods such as Enemy Radar and Animal Instinct to detect nearby enemies within range to disarm and steal their weapons, even through walls.
- By default, Void replicas will hover on the left side of Xaku. Toggle the player camera shoulder angle (default RShift ) to move them to the right side and vice-versa.
- Due to each Void replica having its own line-of-sight, adjusting the side of the player camera shoulder angle allows replicas to target enemies that are otherwise not visible due to obstruction.
- Steal and maintain a large number of Void replicas to deal more damage, attack more targets more frequently, and increase the chance to stagger-lock incoming enemies.
- Recasting Grasp of Lohk yields numerous benefits:
- Disarm new enemies or briefly stun disarmed enemies in range, forcing them to wield melee weapons and approach Xaku while entering the Void replicas' killzone.
- Gather more Void replicas up to the modded maximum targets.
- As enemy levels rise during a mission, newly stolen Void replicas will scale their damage based on the new enemy level of the disarmed targets. Stealing weapons from Eximus enemies will produce stronger Void replicas due to the level difference.
- Combo with The Lost's sub-abilities to further enhance Xaku's offensive and defensive capabilities:
- Cast Accuse on a group of enemies then steal the corrupted's weapons, forcing them to become melee combatants to actively approach and distract enemies.
- Cast Gaze on an enemy then standby near the target, allowing your Void replicas to quickly target and kill incoming enemies with their defenses reduced.
- Cast Deny to deal increased damage with its Void beam, based on the number of Void replicas around you. Surviving enemies are lifted helplessly, allowing Xaku to close in with the Void replicas to eliminate them safely.
- Activate The Vast Untime to freeze Grasp of Lohk's duration timer, helping sustain your Void replicas for an extended period of time. Enemies hit by the Void blast are weakened to Void damage from your Void replicas.
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 3 75
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The Lost Cycle through a trio of lost Warframe powers. Accuse manifests a Void fissure to corrupt enemies into allies. Gaze grasps targets in Void tendrils that capture damage and inflict it when the target is released. Deny annihilates with a beam of Void energy, wiping Sentient resistances. Introduced in Update 29.0 (2020-08-25) |
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Info
- Heeding the voices within to harness their powers, Xaku selectively casts one of three abilities originating from the three fallen Warframes. Tapping the ability key freely cycles the selection wheel between the Accuse, Gaze, and Deny sub-abilities. Holding down the ability key (default 3 ) expends 75 energy to cast the selected power.
- Casting speed is affected by Casting Speed.
- Tap/hold cast can be inverted in the Settings menu.
- The Lost's cycle selection wheel appears above Xaku's ability icons. Each ability's duration timer is displayed below their associated sub-ability icons in the wheel.
- Channel the Void to access their lost components' unique powers:
Accuse
- Distorting reality with Accuse, Xaku manifests a Void fissure at the targeted location on the aiming reticle over infinite range. Up to 5 / 6 / 7 / 8 enemies within 5 / 7 / 9 / 11 meters from the fissure become corrupted by Void energy for 4 / 8 / 12 / 16 seconds, stunning them in place then causing them to fight for Xaku and turn on their former allies.
- Xaku does not require Line of Sight to enemies to corrupt them with Accuse.
- While Accused enemies are briefly allied with Tenno, they can still be damaged by most sources and affected by some Warframe abilities.
- Exceptions include Mesa's Peacemaker and Grasp of Lohk's floating weapons.
- Exceptions include
- Accused enemies appear on the minimap as allied blue dots.
- The number of active Accused units is displayed as an icon beside Xaku's shield and health indicators.
- Accused enemies do count toward mission progression (e.g. Defense). They must be slain or their ability duration ended to progress.
- Can be recast while active if under the max targets cap. Recasting on new enemies adds them to the existing number of Accused units up to the cap. Each new Accused unit has its own separate full ability duration.
- Cannot be recast while at max targets count.
- Casting Accuse is a full-body animation that restricts movement and other actions.
- Xaku's shoulder and arm pieces visually detach and return to position, as Xaku reaches out with their right hand sending the right side pieces into the Void fissure forming at the targeted location. As the Void fissure forms, Void lightning strikes nearby enemies as the ability's area radius becomes briefly visible then fades with the breach's closing, while Xaku's pieces return to their positions on their body.
- Enemies affected by Accuse glow with an upward stream of Void energy that resembles the Vengeful Trickster Ephemera, as well as emitting a Void energy cloud around the shoulders.
Gaze
10 / 15 / 20 / 25 meters and a ?° angle cone centered on the aiming reticle. Gazed target becomes entangled in Void tendrils, during which it is disabled, immobile, and Invulnerable to damage for 5 / 8 / 11 / 14 seconds; while captive, the victim stores all damage prevented by its invulnerability and receives it in full when the ability expires. Gazed target also emits a defense reduction aura with a 6 / 8 / 10 / 12 meter radius, which weakens other enemies' maximum Shields and Armor by 20% / 30% / 40% / 50% while within range. Up to 2 Gazed targets may exist at once.
- Enemy armor and shields are fully removed at 200% Ability Strength. With one Corrosive Projection, armor will be fully stripped at 164% Ability Strength.
- Shield strip removes a percentage of the current maximum value. Armor strip, however, is a percentage of an enemy's total.
- Enemy shields can still regenerate with natural shield regeneration (such as Armis Ulta, Kuva Liches, or Sisters of Parvos) or while affected by regeneration buffs (such as Shield Ospreys).
- Shield strip removes a percentage of the current maximum value. Armor strip, however, is a percentage of an enemy's total.
- While invulnerable, the Gazed target is still susceptible to Status Effects, with exception of the inability to proc Void status.
- Gaze defense reduction auras will stack with other defense reduction effects, but multiple Gaze auras do not stack with each other, whether from the same caster or from another Xaku in the squad.
- Enemies regain their reduced shields and armor once they move outside of Gaze's aura.
- If the enemy target dies before Gaze's entanglement fully takes effect, the casting energy cost is refunded to Xaku.
- If an enemy that has both shields and armor wanders into Gaze's aura, such as an Oxium Osprey, then shields will be prioritized over armor.
- While affected, the enemy target emits a radial aura visual effect and emits a Void energy cloud around the shoulders.
Deny
25 / 30 / 35 / 40 meters away. Enemies struck directly or within a ? meters radius from the beam receive 1,000 / 2,000 / 3,000 / 4,000 Void damage, reset damage resistances if used against Sentient faction, and become suspended in aerial stasis for 5 / 8 / 11 / 14 seconds.
- Deny's Void damage benefits from Ability Strength, number of Grasp of Lohk's Void replicas, and The Vast Untime's Void damage vulnerability using the following expression:
- Total Void Damage = Void Damage × (1 + Ability Strength) × (Number of Void Replicas + 1) × Void Damage Vulnerability
- At ability rank 3 with a maxed Intensify equipped, stolen 6 Void replicas, against an enemy affected by The Vast Untime, Xaku will deal 4,000 × (1 + 0.3) × (6 + 1) × 1.5 = 54,600 Void damage.
- Deny's damage can be further amplified by Enemy Body Parts multipliers.
- Enemies with selective crowd control effect immunity such as the Battalyst and Conculyst are unaffected by Deny's aerial stasis.
- Ability Synergy:
- Xata's Whisper does not grant additional Void damage to The Lost's sub-abilities.
- Grasp of Lohk can disarm and steal the weapons of enemies affected by all sub-abilities of The Lost.
- Void replicas will not attack enemies corrupted by Accuse, unless affected by Radiation status effect or other faction modifier abilities (e.g. Chaos)
- Void replicas will not attack an enemy trapped by Gaze.
- Void replicas amplify Deny's damage, based on the number of stolen weapons hovering around Xaku.
- Void replicas will not attack enemies corrupted by Accuse, unless affected by
- The Lost's sub-abilities interact with each other in various ways:
- Accuse can corrupt enemies into allies while they are lifted by Deny. However, it cannot corrupt a Gazed enemy target. Accused units will attack a Gazed enemy target, storing damage to inflict to the victim once released from the Void tendrils.
- Gaze may be cast on an enemy affected by either Accuse or Deny. Gaze reduces the defenses of Accused units in range. Gazing an Accused unit creates an invulnerable decoy that draws enemy aggro until Accuse expires.
- Deny does not affect Accused units, but will contribute damage to Gazed enemy targets.
- The Vast Untime renders enemies 50% more vulnerable to Deny's beam and pauses all sub-abilities' ability duration timers while active.
- Each active sub-ability is a separate instance from Xaku. As such, the ability nullifying effects of special enemies (e.g. Nullifier Crewman) will not dispel The Lost's sub-abilities if only Xaku is affected.
Augment
- Main article: The Relentless Lost
The Relentless Lost is a Warframe Augment Mod for Xaku's The Lost that increases Ability Strength and Ability Efficiency for the ability, stacking up to three times but resets on casting the same sub-ability twice.
Tips & Tricks
- With one player using Corrosive Projection, 100% armor strip can be achieved at 164% Ability Strength.
- Cast Accuse on a nearby surface or the ground below you to quickly corrupt surrounding enemies to help fight alongside you, or cast on a group of enemies off in the distance to create a distraction when faced with ranged threats.
- Accused enemies are allied units to the Tenno, therefore their special auras (such as those of Shield Osprey, Ancient Healer, Eximus, etc) or abilities will be used to briefly benefit you and your team.
- Cast Accuse on or near a mission objective to enlist the enemy to defend them for you.
- Cast Gaze on up to two enemies to completely disable them for the duration, while emitting an aura that reduces the defenses of other enemies in range.
- All damage prevented by the Gazed target's invulnerability will be dealt in full when the ability ends.
- Gazed targets do not halt mission progression such as Defense waves, allowing your defense reduction auras to persist in an area until you release the targets.
- Gazed targets are still susceptible to status effects. Inflict Radiation procs to create an invulnerable distraction for nearby enemies.
- Cast on enemies in different locations to encompass a larger area with the defense reduction auras, or close to each other to stack the defense reduction on enemies within the overlapping auras if the modded amount is below 100% defense strip, a full armor strip otherwise can be achieved with approx. 200% ability strength.
- Gaze is cast within a cone centered on the aiming reticle. The closest enemy near the sides of the reticle will be automatically targeted by the ability.
- During an Interception mission, when an enemy is using a control console to regain control of the point, cast Gaze upon them. Doing so will keep the control console occupied without giving the enemy control of the tower.
- Continuously cast The Vast Untime to keep this enemy in stasis nearly indefinitely. If/when the tower is recaptured, to prevent conflict on the point, look at the suspended enemy and cast Gaze on them again to release them.
- Continuously cast
- Cast Deny against enemies packed in a tight line to maximize its effect.
- Deny's damage is greatly amplified by the number of stolen weapons from Grasp of Lohk. Steal and maintain a large amount of weapons to deal devastating damage with Deny's Void beam.
- Enemies lifted by Deny are made easy targets for headshots from your weapons.
- Activate The Vast Untime to freeze all sub-abilities' duration timers. Accused enemies will remain on your side, Gazed targets stay trapped and emit their auras, and Denied enemies stay lifted airborne for an extended period of time. Strike enemies hit by the Void blast with Deny's Void beam to deal increased damage. This ability also slows enemies, making them easier to keep inside of Gaze's aura radius.
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 4 100
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The Vast Untime Temporarily shed the outer pieces of Xaku in a destructive blast, then stalk the battlefield in a new, swifter skeletal form. Enemies damaged by the body shrapnel are rendered weaker to Void Damage. Xaku's other active abilities' duration is frozen in time and resumes once The Vast Untime expires. Introduced in Update 29.0 (2020-08-25) |
Strength:600 / 800 / 1,000 / 1,200 ( Void damage) 10 / 15 / 20 / 25 % (slow) |
| Duration:10 / 15 / 20 / 25 s
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| Range:10 / 15 / 20 / 25 m
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Misc:
+50% ( |
Info
- Death and decay encroach as Xaku detonates themselves, expending 100 energy to explosively fragment their body parts outward. Enemies within direct Line of Sight and 10 / 15 / 20 / 25 meters of Xaku receive 600 / 800 / 1,000 / 1,200 Void damage from the blast and suffer 50% Void Damage Vulnerability and 10% / 15% / 20% / 25% Slow for 10 / 15 / 20 / 25 seconds. For the same duration, Xaku's skeletal form is exposed, increasing their passive ability's Dodge chance and area damage reduction to 75%, grants themselves a 20% movement speed bonus, and completely pauses the duration timers of Xaku's other abilities. Xaku can reform their body and manually deactivate the ability by holding the ability key (default 4 ).
- Slow is capped at 100%, achieved with 400% Ability Strength.
- Debuffed enemies emit a Void energy cloud around their torso.
- Increased dodge chance is displayed next to the shield and health indicators as a buff icon with the chance percentage.
- Void damage from the blast does not reset Sentient damage resistances.
- The blast can destroy Objects, which does not require line of sight.
- Slow is capped at 100%, achieved with 400%
- Ability Synergy:
- The Vast Untime pauses the ability duration timers of Xaku's other abilities, including both currently active and newly cast abilities while in skeletal form.
- Only abilities belonging to Xaku originally are affected by the timer pause, whereas subsumed abilities via the Helminth system are not affected.
- Enemies hit by The Vast Untime's explosion are Void damage vulnerable to Xata's Whisper, Grasp of Lohk, and The Lost's Deny.
- The Vast Untime pauses the ability duration timers of Xaku's other abilities, including both currently active and newly cast abilities while in skeletal form.
- Can be recast while active in skeletal form by pressing the ability key again (default 4 ), causing Xaku to detonate again and affect new enemies in range, as well as refreshing ability duration to full. Note that there is a small window where the timers of Xaku's other abilties can run down before The Vast Untime is recast.
- Activating The Vast Untime is a full-body animation that restricts movement and other actions, while deactivation is near-instantaneous.
- Xaku crouches in place, visually detaching their body pieces and suspending them in the air with Void energy tethers. Xaku then reels back, surging into the air, while most of their pieces scatter outward in an expanding Void energy blast. Xaku's skeletal form retains some body pieces for bare minimal structural support. Reforming the body pieces on Xaku causes them to quickly regrow on the skeleton.
- Xaku's Armor Cosmetics and Syandana are hidden during the skeletal form. Regalia, Sigils, and Ephemera remain visible.
- Equipping the Corporeal appearance auxiliary attachment will have Xaku retain their normal form during The Vast Untime; when casting the ability, Xaku's armor pieces will still fly out and then immediately reattach themselves.
- Equipping the Skeletal appearance auxiliary attachment will have Xaku appear in their skeletal form even when not using The Vast Untime.
Tips & Tricks
- When modded with high Ability Range, this ability can be used to destroy Storage Containers and Resource Deposits across a massive area, even through walls. When paired with a large Loot Radar, this is an excellent strategy for locating Resource Caches, Syndicate Medallions, and other static objects requiring direct pickup, as those would be the only loot icons that do not disappear or "move" when damaged by the blast. A high gather range from Vacuum or Fetch will also help to clear the area of common loot and show only the valuable resources that must be manually retrieved.
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