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We thought it was inanimate, but it has grown...changed. Ghost refuses to analyze it further, but I secretly believe it has become my friend.
― In-game description

Eidolon Ally is a legendary auto rifle. It is obtained by activating the "Cannibalism" talent on a Husk of the Pit. It can then be upgraded to the exotic auto rifle Necrochasm using a Essence of the Oversoul as part of the quest The Crux of Darkness.


Eidolon Ally can be upgraded with the following perks:

Column 0[]

Kinetic Damage perk icon.png Kinetic Damage
This weapon causes kinetic damage.
Random perk icon.png Random
This weapon can come in 3 versions.
Lich Bane icon.png Lich Bane
Projectiles have a chance to disorient Hive Wizards.
Hive Disruptor icon.png Swift Claws
Damaging Hive Thralls has a chance to give a temporary burst of Agility.
Hive Breaker icon.png Dark Breaker
Projectiles will overpenetrate through Hive Knight Wall of Darkness.
Infuse perk icon.png Infuse
Consume a more powerful Weapon to boost the Attack value of this Weapon.

Column 1[]

Accurized Ballistics icon.png Accurized Ballistics
More range and Impact.

Increased recoil.

CQB Ballistics icon.png CQB Ballistics
Greatly reduced recoil.

Significant penalty to range.

Aggressive Ballistics icon.png Aggressive Ballistics
More predictable recoil.

Enhanced Impact. Shorter range and more recoil.

Column 2[]

Cascade icon.png Cascade
Melee kills increase the reload speed of this weapon for a short time.

Column 3[]

Single Point Sling icon.png Single Point Sling
Switch weapons faster. Move quicker while aiming.
Flared Magwell icon.png Flared Magwell
Reload this weapon even faster.
Fitted Stock icon.png Fitted Stock
Increases weapon stability.

Column 4[]

Rangefinder icon.png Rangefinder
Aiming this weapon increases its effective range.

Column 5[]

Burgeoning Hunger icon.png Burgeoning Hunger
What power drives this appetite that grows after each meal?