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FirestormFirestorm of MeteorsFirestorm of PeltingVaal Firestorm
FirestormSpell, AoE, Duration, Fire
Level: (1-20)
Cost: (13-25) Mana
Cast Time: 0.75 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 80%
Requires Level 28Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies.Base duration is 1.40 seconds
Deals (23-361) to (35-541) Fire Damage
One impact every 0.15 seconds
Base radius is 1.3 metres
First Impact has 100% more Area of Effect
First Impact deals 325% more Damage with Hits and Ailments
Maximum 3 Firestorms at a time

Additional Effects From 1-20% Quality:
Base radius is (0.01-0.2) metres
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Drop level: 28
Vendor Offer
1x Scroll Fragment
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemFirestorm

Firestorm is a spell that rains numerous fiery bolts in an area, each bolt dealing area of effect fire damage.

Skill functions and interactions

Area of Effect: Increased AoE will increase both the area in which the fireballs randomly fall and also the radius of the individual fireball damage. Full spell damage is done at any point within the AoE of a fireball. However, increasing the size of the spell area means that each monster within the spell area is within fewer individual fireball bursts[1]; thus, less spell damage is dealt to any single enemy as area increases. For this reason increasing the AoE of Firestorm paradoxically decreases the average damage dealt to a single target.

Duration: Increasing duration with either supports or passives will increase the total number of fireballs that fall before the spell ends.

Damage Effectiveness: Damage from secondary sources like 'added damage' supports or heralds applies at only 80% of their listed value.

Damage per Second: Due to the complexity of estimating actual DPS of the skill including all possible factors, ingame tooltip shows only average damage per hit of one fireball, with actual DPS of the skill being considerably higher. The closest currently available estimate can be obtained by using the damage calculator.

Gem level progression

LevelRequired LevelRequired IntelligenceMana
Exp.Total Exp.
128671323 to 3500
231731429 to 43199345199345
334791536 to 54285815485160
437851644 to 66401344886504
540921654 to 815543791440883
642961762 to 934774371918320
7441001871 to 1065837862502106
8461041881 to 1217103593212465
9481091992 to 13813555114567976
105011319105 to 15711388775706853
115211720119 to 17813682337075086
125412120135 to 20216383388713424
135612521153 to 229195664810670072
145813021173 to 260365518414325256
156013422196 to 294301732717342583
166213822222 to 333775999525102578
176414223251 to 3761513819340240771
186614624283 to 4252608382566324596
196815124320 to 48062620247128944843
207015525361 to 541211708088340652931
217215925407 to 610N/AN/A
2274N/A26458 to 688N/AN/A
2376N/A26516 to 774N/AN/A
2478N/A27581 to 872N/AN/A
2580N/A27654 to 980N/AN/A
2682N/A28735 to 1102N/AN/A
2784N/A28826 to 1238N/AN/A
2886N/A29927 to 1391N/AN/A
2988N/A301041 to 1562N/AN/A
3090N/A301169 to 1753N/AN/A
3191N/A301238 to 1857N/AN/A
3292N/A311311 to 1966N/AN/A
3393N/A311388 to 2082N/AN/A
3494N/A311470 to 2205N/AN/A
3595N/A311556 to 2335N/AN/A
3696N/A321648 to 2472N/AN/A
3797N/A321744 to 2617N/AN/A
3898N/A321846 to 2770N/AN/A
3999N/A331954 to 2932N/AN/A
40100N/A332068 to 3103N/AN/A

Item acquisition

Firestorm can drop anywhere.


Firestorm can be created from the following recipes:

13The CataclysmThe Cataclysm13Level 21 Spell Gem
The mighty warriors traded in blows, the nimble archers in arrows, yet it was the brazen thaumaturgists who would bring catastrophe to all.
Random corrupted level 21 Spell gemA
6The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox."
- Ezomyte Proverb
Random level 20 gemA
3Gemcutter's PromiseGemcutter's Promise3Gem
Quality: +20%
"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter
Random gem with 20% qualityA
1Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item
Item drops after killing {0} monsters
Right click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
Random gem with 1–20% qualityA
1The VoidThe Void1Reach into the Void and claim your prize.Random divination card set exchangeA

Quest reward

This item is given as a quest reward for the following quests:

Class →WitchShadowRangerDuelistMarauderTemplarScion
Quest ↓
Sever the Right Hand
Act 3

Vendor reward

This item can be bought at the listed NPC vendors, after completing the following quests:

Class →WitchShadowRangerDuelistMarauderTemplarScion
Quest ↓
A Fixture of Fate
Act 3
Sever the Right Hand
Act 3
Fallen from Grace
Act 6
Lilly Roth

Related helmet enchantments

The following helmet enchantments affect Firestorm.

Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.

NameFor generated item/monster modifiers the minimum item/monster level respectively. Some generation types may not require this condition to be met, however item level restrictions may be raised to 80% of this value.LabyrinthStatsSpawn Weighting
Enchantment Firestorm Damage 166Merciless Labyrinth25% increased Firestorm Damagehelmet 100
Enchantment Firestorm Damage 275Eternal Labyrinth40% increased Firestorm Damagehelmet 100
Enchantment Firestorm Duration 166Merciless Labyrinth20% increased Firestorm Durationhelmet 100
Enchantment Firestorm Duration 275Eternal Labyrinth30% increased Firestorm Durationhelmet 100
Enchantment Firestorm Explosion Area Of Effect 166Merciless Labyrinth16% increased Firestorm explosion Area of Effecthelmet 100
Enchantment Firestorm Explosion Area Of Effect 275Eternal Labyrinth24% increased Firestorm explosion Area of Effecthelmet 100

Alternate skill effects

Firestorm has the following alternate skill effects:

Celestial Firestorm EffectCelestial Firestorm EffectSkill Gem EffectYour Firestorm becomes a Celestial Effect.Your Firestorm becomes a Celestial Effect.
Purple Firestorm EffectPurple Firestorm EffectSkill Gem EffectYour Firestorm becomes a Purple Effect.Your Firestorm becomes a Purple Effect.
Siege Firestorm EffectSiege Firestorm EffectSkill Gem EffectYour Firestorm becomes a flaming siege assaultYour Firestorm becomes a flaming siege assault
Stygian Firestorm EffectStygian Firestorm EffectSkill Gem EffectYour Firestorm becomes a Stygian Effect.Your Firestorm becomes a Stygian Effect.

Version history

Version Changes
  • Quality now provides +0-0.2 metres to radius, instead of 0-20% increased Damage.
  • Firestorm now has one impact every 0.15 seconds (previously every 0.2 seconds).
  • Firestorm now deals 23 to 35 Fire Damage at gem level 1 (unchanged), up to 361 to 541 at gem level 20 (previously 250 to 375).
  • Now has 80% Effectiveness of Added Damage at all gem levels (previously 55%).
  • Quality on Anomalous Firestorm no longer grants “(0.00)-(-0.06) seconds to Base Duration”, or “First Impact deals 0-60% more Damage with Hits and Ailments”. Instead, it now grants 0-10% chance to Ignite Enemies.
  • Because of base Ignite damage changes, Ignite with the skill is now 150% higher. If using the Anomalous quality, the Ignite is now 110% higher.
  • Now deals 23 to 35 Fire Damage at gem level 1 (previously 22 to 33), up to 250 to 375 Fire Damage at gem level 20 (previously 207 to 311).
  • Now has 55% Effectiveness of Added Damage (previously 50%).
  • First Impact now deals 325% more Damage with Hits and Ailments (previously 250%).
  • Firestorm has a new skillbar icon.
  • Now grants more damage with hits and ailments on the first impact (previously it granted more area damage, which does not apply to ailments).
  • The first impact now deals 250% more damage (from 150%) with hits and ailments.
Firestorm now calls down a large meteor that impacts the targeted location, followed by a series of smaller impacts at set intervals over the storm's duration. The base power of the spell has been significantly raised, so you are now limited to three Firestorms at any given time (any new storms created will replace the oldest).
  • Now requires level 28 at gem level 1 (from 12). Please be aware that existing low level characters with Firestorm socketed may have that gear slot disabled until the Firestorm gem is removed.
  • Now has a mana cost of 13 at gem level 1, up to 25 at gem level 20.
  • Now has an added damage effectiveness of 50%.
  • Now deals 22 to 33 fire damage at gem level 1, up to 207 to 311 fire damage at gem level 20.
  • Now has a base duration of 1.4 seconds with one impact every 0.2 seconds.
  • The first impact now has 100% more area of effect and deals 150% more damage.
  • Now has alternative quality:
Anomalous: First Impact deals 3% more damage and Base duration is -0.003 seconds (per 1% quality)
Divergent 1% reduced Enemy Stun Threshold (per 1% quality)[2]
  • Now offered to the Witch and Templar for completing Sever the Right Hand, and can be purchased from Clarissa by the Shadow and Scion.
  • The visual effects have been improved.
  • Now deals 7 to 11 Fire Damage at gem level 1 (from 4 to 11).
  • Now has an added Damage effectiveness of 45% (from 30%).
  • Mana Cost at gem level 20 is now 25 (was 26).
  • Now deals 4 to 11 Fire damage at gem level 1 (unchanged) and 200 to 300 Fire damage at gem level 20 (from 202 to 302).
  • Now has a cast time of 0.75 seconds (from 0.9).
  • Now deals 4-11 fire damage at gem level 1 (up from 4-10), up to 202-302 fire damage at gem level 20 (up from 162-243).
  • Damage increased by around 20% higher at level 20.
  • Firestorm: Had a very slight damage buff. Area of effect of explosions increased by 11% (9 to 10). It now grants 1% area damage per 1% quality instead of reduced delay between fireballs. The Duration of Firestorm has been increased from 1.3 seconds to 2 seconds at all levels. Base Cast Speed has been increased from a cast time of 1 second to 900ms. Critical Strike Chance has been increased from 5% to 6%.
  • Firestorm: The radius of the area that fireballs land in has been increased by 39%. The delay between strikes has been reduced from 0.15 seconds to 0.10 seconds. Damage has been increased by 35%. The quality bonus has been reduced by 33.33% to match the reduced projectile delay.
  • Reduced mana cost.
  • The damage done by the Firestorm spell when used by all versions of Ambrosia and Merciless Fire Fury has been increased.
    Merciless Gravicius's Firestorm has been very slightly increased in damage.
  • Spells with Damage Effectiveness no longer have their own damage affected by Damage Effectiveness.
    Damage values on these skills have been updated to reflect this.
  • Fixed a bug where monsters in high level areas would not do the correct Firestorm damage.
  • Fixed the randomness when it was used with Traps.
  • Increased the damage and made its cluster tighter.
  • Fixed a bug where the damage from Firestorm would not display on the client at the right time.
  • Changed Firestorm to be affected less by additional damage from support gems.
  • Fixed a bug where Firestorm could hit monsters through walls.
  • Modified Firestorm's behaviour so that the explosions have a larger radius and
    are more likely to fall near the centre of the affected area.
  • Doubled the number of fireballs that fall and rebalanced damage around these changes.
  • Raised the overall damage and its high level damage scaling.
  • Added new skill prototype - Firestorm: Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies.


  1. While each fireball takes up the same proportion of the total area as the radius of both increases proportionally, the monster's radius does not change, so it takes up less of the spell area. Thus, the probability for a given fireball to hit the monster goes down as AOE goes up.
  2. Bex_GGG (September 17, 2020). "Alternate Quality Gems in Path of Exile: Heist". Path of Exile Forums. Retrieved January 13, 2021.

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