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Borderlands 3 Legendary Class Mod - Tr4iner
Borderlands 3 Legendary Class Mod - Tr4iner

About the Tr4iner Class Mod:

The Tr4iner is a Legendary item in Borderlands 3. This Beastmaster Class Mod lets your pets dominate enemies.

Special Weapon Effect:

“This is my cause.”

Whenever FL4K’s pet would kill an enemy there’s a 25% chance it confuses that enemy instead for 20 seconds. Once Dominated, the enemy is set to 25% health and once the duration ends the enemy is killed.

How to get the Tr4iner?:

The Tr4iner can be obtained from any suitable loot source, as a world drop on Xylourgos, in the Guns, Love, and Tentacles DLC. But it has a 15% chance of dropping from Shiverous The Unscathed in Negul Neshai. They are also one of the Rare Spawns in DLC 2.

Bonus Skills:

Variants of the Tr4iner class mod grant the following bonuses:

SkillSkill Description
Grim HarvestFL4K gains increased Gun Damage, Pet Damage and Action Skill Damage. Gun Damage: +3% Pet Damage: +7% Action Skill Damage: 5%.
Pack TacticsAll Damage dealt by FL4K and their Pet is increased. Additionally, the Maximum Health of both FL4K and their Pet is increased. Pet and FL4K Damage: +7% Pet and FL4K Maximum Health: +5%.
FerocityFL4K’s Pet deals increased damage. Pet Damage: +10%/point.

Passive Stat Bonuses

If you want a god-roll Tr4iner Class Mod you should be looking for these passive stats bonuses on your beastmaster class mod:

Bonus StatDescription
[Weapon Type] DamageSpecific [Weapon Type] bonus damage is multiplicative and will, therefore, provide a larger damage increase than the general weapon damage.
[Manufacturer] Critical DamageSpecific [Manufacturer] Critical Damage boosts can really crank up FL4K’s DPS on any build.
Weapon DamageWhile General Weapon Damage is additive instead of multiplicative, like the specific [Weapon Type] damage, it still provides a nice universal bonus that applies to all your weapons.
Action Skill CooldownIncreased Action Skill Cooldown is great since it allows you to utilize your action skill quicker and Class Mods provides a bigger cooldown bonus than artifacts.


  • Best Roll: 3/3 “Pack Tactics”, 2/5 “Grim Harvest”
  • Your pet continues to attack the Traitor.
  • After 20 seconds the Traitor dies regardless of his remaining health.
  • BUG: Sometimes the enemy just recharges its health without betraying his allies.
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