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Gas Grenade

Fire a bouncing Grenade that causes a burst of Poison gas when its fuse expires, damaging enemies and leaving behind a growing Poison cloud. Burning effects or Detonator skills will cause the cloud to explode in a fiery blast.

AttackAoEProjectileGrenadeFireChaosDuration
Tier
S

Top-tier — strong mechanics, versatile, and highly efficient in the current meta.

Cost
12 mana
Cast Time
1s
Crit Chance
Max Level
20
Cooldown
None

Gem Effects

Impact

Detonation Time is 2 seconds

Impact radius is (1.4-2) metres

Poison Cloud

Limit 6 Poison Clouds

Does not Hit, but Poisons enemies as though Hitting them

Gains 20% more Radius per second, up to a maximum of 80%

Cloud Duration is 6 seconds

Cloud radius is (1.5-2) meters

Explosion

Converts 100% of Physical Damage to Fire Damage

Requirements

Weapons:Crossbow
At Level 20:86 Strength86 Dexterity

Best Support Gems for Gas Grenade

Ranked by synergy — the game won't tell you which combo deals the most damage

How to Use Gas Grenade Effectively

Practical tips you won't find on the tooltip

🌊

AoE Clearing

Invest in Area of Effect to cover more ground. Excellent for map clearing and handling packs efficiently.

🏹

Projectile Scaling

Extra projectiles (GMP) and Pierce/Chain/Fork dramatically multiply your clear. Choose based on mob density.

🔥

Ignite Potential

Fire skills can inflict Ignite for sustained DoT. Invest in Ignite Duration and Fire DoT multiplier for maximum burn damage.

Duration Matters

Duration scaling extends effect uptime. Less recasting = more time dealing damage. Invest in skill duration passives.

Alternatives to Gas Grenade

Similar skills — which one fits your build better?

How to Get Gas Grenade

Source
Uncut Skill Gem
Vendor
Gem vendor after quest
Max Level
20
Resource
mana

Use an Uncut Skill Gem to obtain Gas Grenade. These drop from enemies or can be purchased from the gem vendor once unlocked through the campaign.