active

Bonestorm

Channel to conjure a swarm of bone spikes in the air, then release to fire them at enemies and explode. Shrapnel Impales enemies Hit, causing subsequent Attack Hits against those targets to deal extra damage. Consumes your Power Charges to cause much larger explosions.

SpellAoEProjectileSustainedPhysicalChannelling
Tier
S

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

Cost
355 mana
Cast Time
0.125s
Crit Chance
15%
Max Level
20
Cooldown
None

Gem Effects

Deals (4-116) to (7-175) Physical Damage

200% more Impale Magnitude

Impale on Spell Hit

Modifiers to cast speed also affect this skill's cost

Can fire up to 20 Projectiles

Requirements

Primary:intelligence
At Level 20:157 Intelligence

Best Support Gems for Bonestorm

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

How to Use Bonestorm 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.

💥

Crit Viable

Base 15% crit — strong crit scaling potential. Invest in crit chance + multiplier from gear and passive tree.

🎯

Crit Priority

15% base crit is exceptional. This skill is designed for crit builds — stack crit multiplier for huge damage spikes.

Alternatives to Bonestorm

Similar skills — which one fits your build better?

How to Get Bonestorm

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

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