Storm Burst

Storm BurstAoE, Spell, Lightning, Channelling, Duration, Physical
Level: (1-20)
Cost: (2-5) Mana
Cast Time: 0.25 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 35%Requires Level 12Unleash orbs of energy while you channel that repeatedly jump towards the targeted location until their duration expires, dealing damage in small area after each jump. When you stop channelling, all remaining orbs explode, dealing higher damage in a larger area.Base duration is 1.2 seconds
Deals (6-168) to (8-252) Physical Damage
Exploding Orbs deal 75% of Skill Damage for each 0.4 seconds of remaining Duration
50% of Physical Damage Converted to Lightning Damage
Orbs jump every 0.4 seconds
+(0-4) to radius

Additional Effects From 1-20% Quality:
0.5% increased Area of Effect0.5% increased Skill Effect Duration2% increased Area of Effect while Channelling
2% reduced Explosion Area of EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

Acquisition
Drop level: 12Vendor Offer
1x Scroll FragmentMetadata
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemStormBurst

Storm Burst is a Spell Channelling skill that creates orbs of energy which deal Physical damage, half of which is converted to Lightning damage, in an Area of effect. The orbs deal damage at an interval of 0.4 seconds over a Duration of 1.2 seconds.

Skill function and interaction

Channelling Storm Burst creates a cluster of pulsing orbs that follow the mouse pointer. Enemies can be hit by multiple orbs, but the orbs spawn in a spread out pattern resembling buckshot.

Each orb created has its own duration tracker. Every 0.4 seconds, the orbs will jump to a new location around the cursor and create an explosion. This 0.4 seconds interval is independent for each orb.

• Area of Effect: Area of Effect modifiers affect the radius of the explosion caused by each orb, but does not affect the spread of the orbs from the cursor. Thus, increasing AoE will result in more overlapping explosions and higher hit rate.

• Cast Speed: Cast speed modifiers affect the rate at which new orbs are created, but does not affect the jump interval (0.4s).

• Skill Duration: Skill duration modifiers affect how long each orb stays on the ground before expiring and exploding. However, because the the skill deals damage at an interval of 0.4 seconds, investing in skill duration will only have a meaningful effect if it would bring the total duration to the next breakpoint in multiples of 0.4 seconds (i.e. 1.6 seconds, 2.0 seconds, 2.4 seconds, etc.) There is no difference between 2.01 seconds and 2.39 seconds, or any other duration that is not a multiple of 0.4.

Gem level progression

Level				Mana Cost	Physical Damage	Added Radius	Exp.	Total Exp.
1	12	14	21	2	6 to 8	N/A	0	0
2	15	17	25	2	7 to 11	N/A	15249	15249
3	19	21	30	2	9 to 14	N/A	41517	56766
4	23	24	35	3	12 to 19	N/A	81983	138749
5	27	28	41	3	16 to 24	N/A	147968	286717
6	31	32	46	3	21 to 31	N/A	250557	537274
7	35	36	51	3	26 to 39	N/A	405086	942360
8	38	38	55	3	31 to 47	N/A	447718	1390078
9	41	41	59	4	37 to 56	N/A	615318	2005396
10	44	44	63	4	44 to 66	N/A	834639	2840035
11	47	47	67	4	52 to 78	N/A	1570760	4410795
12	50	49	71	4	61 to 91	N/A	1633987	6044782
13	53	52	75	4	71 to 107	N/A	2151030	8195812
14	56	55	79	5	83 to 125	N/A	2812189	11008001
15	59	58	83	5	97 to 146	N/A	5099360	16107361
16	62	60	87	5	113 to 169	N/A	9400731	25508092
17	64	62	90	5	125 to 187	N/A	15273366	40781458
18	66	64	92	5	138 to 207	N/A	26286582	67068040
19	68	66	95	5	152 to 229	N/A	62890590	129958630
20	70	68	98	5	168 to 252	N/A	212046017	342004647
21	72	70	100	5	185 to 278	N/A	N/A	N/A
22	74	N/A	N/A	6	204 to 307	N/A	N/A	N/A
23	76	N/A	N/A	6	225 to 338	N/A	N/A	N/A
24	78	N/A	N/A	6	248 to 372	N/A	N/A	N/A
25	80	N/A	N/A	6	273 to 409	N/A	N/A	N/A
26	82	N/A	N/A	6	300 to 450	N/A	N/A	N/A
27	84	N/A	N/A	6	330 to 495	N/A	N/A	N/A
28	86	N/A	N/A	6	362 to 543	N/A	N/A	N/A
29	88	N/A	N/A	6	398 to 597	N/A	N/A	N/A
30	90	N/A	N/A	7	437 to 655	N/A	N/A	N/A
31	91	N/A	N/A	7	457 to 686	N/A	N/A	N/A
32	92	N/A	N/A	7	479 to 719	N/A	N/A	N/A
33	93	N/A	N/A	7	502 to 753	N/A	N/A	N/A
34	94	N/A	N/A	7	526 to 788	N/A	N/A	N/A
35	95	N/A	N/A	7	550 to 826	N/A	N/A	N/A
36	96	N/A	N/A	7	576 to 865	N/A	N/A	N/A
37	97	N/A	N/A	7	603 to 905	N/A	N/A	N/A
38	98	N/A	N/A	7	632 to 948	N/A	N/A	N/A
39	99	N/A	N/A	7	661 to 992	N/A	N/A	N/A
40	100	N/A	N/A	7	692 to 1038	N/A	N/A	N/A

Item acquisition

Storm Burst can drop anywhere.

Recipes

Storm Burst can be created from the following recipes:

Amount	Part	Description	Meta
13	The CataclysmThe Cataclysm13Level 21 Spell Gem CorruptedThe 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 gem	A
6	The 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 gem	A
3	Gemcutter'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% quality	A
1	Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersRight 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% quality	A
1	The VoidThe Void1Reach into the Void and claim your prize.	Random divination card set exchange	A

Quest reward

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

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
The Siren's Cadence Act 1	✗	✗	✗	✗	✗	✓	✓

Vendor reward

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

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
The Siren's Cadence Act 1 Nessa	✓	✓	✗	✗	✗	✓	✓
A Fixture of Fate Act 3 Siosa	✓
Fallen from Grace Act 6 Lilly Roth	✓

Related helmet enchantments

The following helmet enchantments affect Storm Burst.

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.

Name		Labyrinth	Stats	Spawn Weighting
Enchantment Storm Burst Additional Object Chance 1	66	Merciless Labyrinth	Storm Burst has a 10% chance to create an additional Orb	helmet 100
Enchantment Storm Burst Additional Object Chance 2	75	Eternal Labyrinth	Storm Burst has a 15% chance to create an additional Orb	helmet 100
EnchantmentStormBurstAdditionalProjectile1	75	Eternal Labyrinth	Storm Burst has a 15% chance to create an additional Orb	helmet 0
EnchantmentStormBurstAvoidStunWhileCasting1	66	Merciless Labyrinth	30% chance to Ignore Stuns while Casting Storm Burst	helmet 0
EnchantmentStormBurstAvoidStunWhileCasting2	75	Eternal Labyrinth	45% chance to Ignore Stuns while Casting Storm Burst	helmet 0
Enchantment Storm Burst Damage 1	66	Merciless Labyrinth	25% increased Storm Burst Damage	helmet 100
Enchantment Storm Burst Damage 2	75	Eternal Labyrinth	40% increased Storm Burst Damage	helmet 100
Enchantment Storm Burst Area Of Effect 1	66	Merciless Labyrinth	16% increased Storm Burst Area of Effect	helmet 100
Enchantment Storm Burst Area Of Effect 2	75	Eternal Labyrinth	24% increased Storm Burst Area of Effect	helmet 100

Version history

Version	Changes
3.17.0	Storm Burst now deals 6 to 8 Physical Damage at gem level 1 (unchanged), up to 168 to 252 at gem level 20 (previously 114 to 171). Now has 35% Effectiveness of Added Damage at all gem levels (previously 25%).
3.15.0	Base radius now increases faster as the gem levels, up to +4 to Base Radius at gem level 20 (previously +2).
3.6.3d	Storm Burst's tooltip now displays the frequency at which Orbs jump and the duration of Orbs.
3.6.0	No longer fires projectiles. Now creates orbs of energy while you channel that repeatedly jump towards the targeted location until their duration expires, dealing damage in small area after each jump. When you stop channelling, all remaining orbs explode, dealing higher damage in a larger area. This explosion deals more damage based on how much duration remains at the point you stop channeling [sic Sīc erat scriptum (Latin: “Thus it was written”) – This quote is reproduced faithfully from its source.]. Now has a cast time of 0.25 seconds (from 0.65). Mana cost at gem level 1 is now 2 (was 4). Mana cost at gem level 20 is now 5 (was 10). Now deals Physical Damage, and converts 50% of Physical Damage to Lightning Damage. Now requires level 12 (from level 28). Now deals 6 to 8 Physical Damage at gem level 1, up to 114 to 174 Physical Damage at gem level 20. Now has an added damage effectiveness of 25% (from 40%). Now gains additional radius as the gem levels.
3.3.0	Now deals 31-47 lightning damage at gem level 1 (up from 9-13), up to 183-275 lightning damage at gem level 20 (up from 50-76). Now deals 65% more area damage (down from 250% more), triggered when channelling ceases. Now has an added damage effectiveness of 40% (up from 10%). Area of effect increased by 10%.
3.1.0	Now correctly modified by factors based on the state of the projectile (such as Powerful Precision`s "Projectiles have 100% increase Critical Strike Chance against Targets they Pierce").
3.0.0	Storm Burst has been added to the game.