Updated: Oct 07, 2025

Harlowe Skill
Unstable Ice-otope

Game
Borderlands 4
Class
Harlowe
Skill Tree
Seize the Day
Skill Type
Kill Skill
Skill Tier
15
Max Points
5
5 ➜ 10
Armor Boost

Unstable Ice-otopeSkill Info

Unstable Ice-otope

Tier: 15

Max Points: 5

Harlowe deals Bonus Cryo Damage with all sources.

Duration: 8s

Skill descriptions were adjusted to reflect their real effect.

Kill Skill

Unstable Ice-otope - Advanced Details

Unstable Ice-otopeBoosting Class Mods

No Class Mod adds points to Unstable Ice-otope.

Harlowe's other Kill Skills

Ripple Effect

Tier: 10

Max Points: 1

Kill Skill

Whenever Harlowe kills an Entangled enemy, automatically Entangle another nearby enemy.

Unstable Ice-otope

Tier: 15

Max Points: 5

Kill Skill

Harlowe deals Bonus Cryo Damage with all sources.

Duration: 8s

Experimentation

Tier: 15

Max Points: 5

Kill Skill

Killing an Entangled enemy causes an Elemental Explosion on all other Entangled enemies.

Highly Efficient

Tier: 15

Max Points: 5

Kill Skill

Whenever Harlowe kills an enemy with a Skill, Restore a portion of her Shield Capacity.

Control Group

Tier: 20

Max Points: 5

Kill Skill

Killing an Entangled enemy restores a portion of Harlowe's Action Skill Cooldown and Action Skill Duration.

Sustained Reaction

Tier: 20

Max Points: 3

Kill Skill

Killing an Entangled enemy restores a portion of Harlowe's Action Skill Duration.

Gordian Knot

Tier: 25

Max Points: 5

Kill Skill

Whenever Harlowe kills an Entangled enemy, she gains a chance to instantly fully restore her Action Skill.

Wasted

Tier: 25

Max Points: 1

Kill Skill

Killing an Irradiated enemy or killing an enemy with Radiation Damage leaves behind a Radiation Hazard.

Hazard Damage/s: 803
Hazard Duration: 5s

Unstable Ice-otopeAlternative passive skills

Unstable Ice-otope

Tier: 15

Max Points: 5

Kill Skill

Harlowe deals Bonus Cryo Damage with all sources.

Duration: 8s

Experimentation

Tier: 15

Max Points: 5

Kill Skill

Killing an Entangled enemy causes an Elemental Explosion on all other Entangled enemies.

Control Group

Tier: 20

Max Points: 5

Kill Skill

Killing an Entangled enemy restores a portion of Harlowe's Action Skill Cooldown and Action Skill Duration.

Sustained Reaction

Tier: 20

Max Points: 3

Kill Skill

Killing an Entangled enemy restores a portion of Harlowe's Action Skill Duration.

Gordian Knot

Tier: 25

Max Points: 5

Kill Skill

Whenever Harlowe kills an Entangled enemy, she gains a chance to instantly fully restore her Action Skill.

Ripple Effect

Tier: 10

Max Points: 1

Kill Skill

Whenever Harlowe kills an Entangled enemy, automatically Entangle another nearby enemy.