Spark

SparkSpell, Projectile, Duration, Lightning
Level: (1-20)
Cost: (5-21) Mana
Cast Time: 0.65 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 190%
Projectile Speed: 560Launches unpredictable sparks that move randomly until they hit an enemy or expire.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal1% increased Projectile SpeedProjectiles Pierce 0.1 additional TargetsFires 0.1 additional Projectiles2% of Lightning Damage Converted to Chaos DamageDeals (1-104) to (28-1983) Lightning Damage
Base duration is 2 seconds
Fires (4-7) additional Projectiles
(0-19)% increased Projectile SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.Acquisition
Drop level: 5Vendor Offer
1x Scroll FragmentMetadata
Item class: Active Skill Gems
Metadata ID: Metadata/Items/Gems/SkillGemSpark

For the Vaal-themed counterpart, see Vaal Spark.

Spark is a lightning spell that launches unpredictable sparks that move randomly until they hit an enemy.

Skill functions and interactions

• Duration: Spark duration determines how long spark projectiles will persist, and is increased by both skill duration passives and support.

• Ricochets: Spark projectiles will bounce off of terrain obstructions and edges for as long as they persist. If a spark projectile strikes a mob, it will be absorbed unless it can pierce.
• A single cast of Spark can hit an enemy once every 0.66 second (after patch 2.3). Keep in mind this is per cast, not per projectile. So without any increase in duration, a single cast can hit an enemy thrice with the base duration of 2 seconds. That is why projectile speed and increased duration can result in significant increases in real DPS.
• When an enemy is hit with a Spark projectile, projectiles from the same cast will go through that enemy without damaging it, as if it wasn't there (until the enemy can be hit again with the same cast which happens after 0.66 second).
• There is no guaranteed distance or time the projectiles will go straight, but they are guaranteed to go forward if there are no obstacles.
• After patch 2.3 Spark projectiles now destroy themselves after travelling 150 units from the character. It should be noted that it's entirely possible for infinite-duration sparks to bounce/circle around within that radius, and never leave it. In general, sparks will be more likely to stay within the radius in an enclosed space with walls to bounce off, and more likely to leave it in open areas.

Immunity to Spark

Spark projectiles travel on the ground and as such all flying enemies are immune to spark. Currently, flying monsters (which not only appear to be flying, such as Ribbons, are:

• Raging Spirits
• Animate Weapons (Note that this includes The Steel Soul, the boss of the Arsenal Map.)

It is therefore advised you have a secondary skill that can hit these monsters.

Spark Duration and Cast Speed

Given the current cast speed of 0.65 seconds, and the lifetime of the Spark is 2 seconds, you can get about 18 sparks into play before the initial sparks expire. 2 seconds / 0.65 seconds = 3.07 casts or 18 sparks.

To figure out the required cast speed to get more sparks into play, divide 2 by the number of casts.

4 casts ( 24 sparks ): 2 / 4 = 0.5 seconds per cast.
5 casts ( 30 sparks ): 2 / 5 = 0.4 seconds per cast.

Note, you may have to decrease these cast times, as this the minimum time; the initial sparks will expire just as the new ones are leaving your position.

To calculate the new desired increase in casting speed, consider that if you increase your speed by 100%, you'll cut the time in half.

NewCastSpeed = OldCastSpeed / ( 1 + IncreasedSpeed )
IncreasedSpeed = OldCastSpeed / NewCastSpeed - 1

As an example, if we wanted to get to 0.5 seconds, this is an % increase of (0.65/.5 - 1)*100% = 30%

Gem level progression

Level			Mana Cost	Lightning Damage	# Projectiles	Projectile Speed	Exp.	Total Exp.
1	1	0	5	1 to 28	4	N/A	0	0
2	2	0	5	2 to 32	4	1%	70	70
3	4	16	6	2 to 40	4	2%	308	378
4	7	22	7	3 to 54	4	3%	1554	1932
5	11	31	7	4 to 76	4	4%	6667	8599
6	16	41	9	6 to 110	4	5%	26047	34646
7	20	50	10	8 to 145	5	6%	49725	84371
8	24	58	11	10 to 188	5	7%	95714	180085
9	28	67	11	13 to 239	5	8%	169595	349680
10	32	75	12	16 to 301	5	9%	283759	633439
11	36	83	13	20 to 376	5	10%	453996	1087435
12	40	92	14	25 to 466	5	11%	703128	1790563
13	44	100	15	30 to 573	6	12%	1061223	2851786
14	48	109	16	37 to 702	6	13%	2065870	4917656
15	52	117	17	45 to 855	6	14%	2507110	7424766
16	56	125	18	55 to 1037	6	15%	5798936	13223702
17	60	134	19	66 to 1253	6	16%	15083919	28307621
18	64	142	20	79 to 1509	6	17%	27792735	56100356
19	67	148	21	91 to 1731	7	18%	43869739	99970095
20	70	155	21	104 to 1983	7	19%	242081556	342051651
21	72	159	22	114 to 2170	7	20%	N/A	N/A
22	74	N/A	22	125 to 2373	7	21%	N/A	N/A
23	76	N/A	23	136 to 2593	7	22%	N/A	N/A
24	78	N/A	23	149 to 2832	7	23%	N/A	N/A
25	80	N/A	24	163 to 3091	8	24%	N/A	N/A
26	82	N/A	24	178 to 3373	8	25%	N/A	N/A
27	84	N/A	25	194 to 3678	8	26%	N/A	N/A
28	86	N/A	25	211 to 4009	8	27%	N/A	N/A
29	88	N/A	26	230 to 4368	8	28%	N/A	N/A
30	90	N/A	26	250 to 4758	8	29%	N/A	N/A
31	91	N/A	26	261 to 4965	8	29%	N/A	N/A
32	92	N/A	27	273 to 5180	9	30%	N/A	N/A
33	93	N/A	27	284 to 5404	9	30%	N/A	N/A
34	94	N/A	27	297 to 5637	9	31%	N/A	N/A
35	95	N/A	27	309 to 5880	9	31%	N/A	N/A
36	96	N/A	27	323 to 6132	9	32%	N/A	N/A
37	97	N/A	28	337 to 6395	9	32%	N/A	N/A
38	98	N/A	28	351 to 6669	9	33%	N/A	N/A
39	99	N/A	28	366 to 6953	9	33%	N/A	N/A
40	100	N/A	28	382 to 7250	10	34%	N/A	N/A

Item acquisition

Spark can drop anywhere.

Recipes

Spark can be created from the following recipes:

Amount	Part	Description	Meta
8	Dying AnguishDying Anguish8Level 19 Gem Alternate Quality: +19%Moribund, he gazed upon the journey taken as blood trickled down his chin. His eye closed on the city ahead that he would never call home.	Random level 19 gem with 19% alternative quality	A
1	Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersQuality GemRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters. Shift click to unstack.	Random superior 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
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
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 superior gem with 20% quality	A
1	The VoidThe Void1Reach into the Void and claim your prize.	Random divination card set exchange	A

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 ↓
Enemy at the Gate Act 1 Nessa	✓	✓	✗	✗	✗	✓	✓
A Fixture of Fate Act 3 Siosa	✓
Fallen from Grace Act 6 Lilly Roth	✓

Threshold jewels

The following threshold jewels augment Spark:

Item	Limit	Radius	Stats
Hazardous ResearchHazardous Research Cobalt JewelLimited to: 1 Radius: Medium(10-15)% increased Lightning Damage With at least 40 Intelligence in Radius, Spark fires Projectiles in a circleOf the elements at the thaumaturgist's disposal, lightning remained the least understood. The simple passage of energy from one to another could result in profound power, or rapid death.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.	1	Medium	(10-15)% increased Lightning Damage With at least 40 Intelligence in Radius, Spark fires Projectiles in a circle

Related helmet enchantments

The following helmet enchantments affect Spark.

Name		Labyrinth	Stats	Spawn Weighting
Enchantment Spark Damage 1	66	Merciless Labyrinth	25% increased Spark Damage	helmet 100 default 0
Enchantment Spark Damage 2	75	Eternal Labyrinth	40% increased Spark Damage	helmet 100 default 0
Enchantment Spark Num Of Additional Projectiles 1	66	Merciless Labyrinth	Spark fires 2 additional Projectiles	helmet 100 default 0
Enchantment Spark Num Of Additional Projectiles 2	75	Eternal Labyrinth	Spark fires 3 additional Projectiles	helmet 100 default 0
Enchantment Spark Projectile Speed 1	66	Merciless Labyrinth	20% increased Spark Projectile Speed	helmet 100 default 0
Enchantment Spark Projectile Speed 2	75	Eternal Labyrinth	30% increased Spark Projectile Speed	helmet 100 default 0

Alternate skill effects

Spark has the following alternate skill effects:

Item	Effect(s)
Automaton Spark EffectAutomaton Spark EffectSkill Gem EffectYour Spark becomes an Automaton Effect.	Your Spark becomes an Automaton Effect.
Celestial Spark Effect78x78pxCelestial Spark EffectSkill Gem EffectYour Spark becomes a Celestial Effect.File:Celestial Spark Effect inventory icon.png	Your Spark becomes a Celestial Effect.
Spark Spiders EffectSpark Spiders EffectSkill Gem EffectYour Sparks become skittering spiders of raw electrical energy	Your Sparks become skittering spiders of raw electrical energy
Void Spark EffectVoid Spark EffectSkill Gem EffectYour Spark becomes a Void Effect.	Your Spark becomes a Void Effect.

Version history

Version	Changes
3.17.0	Spark now deals 1 to 28 Lightning Damage at gem level 1 (previously 2 to 29), up to 104 to 1983 at gem level 20 (previously 70 to 1326). Now fires 4 additional Projectiles at gem level 1 (unchanged), up to 7 at gem level 20 (previously 6). Now has 190% Effectiveness of Added Damage at all gem levels (previously 125%).
3.15.0	Now deals 2 to 29 Lightning Damage at gem level 1 (previously 1 to 29), up to 70 to 1326 Lightning Damage at gem level 20 (previously 63 to 1198). Now has 125% Effectiveness of Added Damage.
3.6.0	Mana Cost at gem level 20 is now 21 (was 23) Now deals 1 to 20 Lightning damage at gem level 1 (unchanged) and 63 to 1198 Lightning damage at gem level 20 (from 52 to 997). Now clears its hit list every 0.66 seconds (from 1 second). This means the same projectile can hit the same monster more frequently.
3.3.0	Now deals 1-20 lightning damage at gem level 1 (same as previously), up to 52-997 damage at gem level 20 (up from 44-832). Now gains 1% increased projectile speed per gem level, up to 19% increased projectile speed at gem level 20. Projectiles now have a base duration of 2 seconds (up from 1.5). Now has an added damage effectiveness of 100% (up from 70%).
2.3.0	SparkSparkSpell, Projectile, Duration, Lightning Level: (1-20) Cost: (5-21) Mana Cast Time: 0.65 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 190% Projectile Speed: 560Launches unpredictable sparks that move randomly until they hit an enemy or expire.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal1% increased Projectile SpeedProjectiles Pierce 0.1 additional TargetsFires 0.1 additional Projectiles2% of Lightning Damage Converted to Chaos DamageDeals (1-104) to (28-1983) Lightning Damage Base duration is 2 seconds Fires (4-7) additional Projectiles (0-19)% increased Projectile SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. and Vaal SparkVaal SparkVaal, Spell, Projectile, Duration, Lightning Level: (1-20) Souls Per Use: 30 Can Store 1 Use(s) Soul Gain Prevention: 5 sec Cast Time: 0.65 sec Critical Strike Chance: 5.00% Effectiveness of Added Damage: 40%Continuously launches unpredictable sparks in all directions that move randomly until they hit an enemy or expire.Per 1% Quality:1Superior1% increased Projectile SpeedDeals (1-24) to (11-454) Lightning Damage Base duration is 2 seconds Fires Projectiles in random directions Modifiers to Skill Effect Duration also apply to this Skill's Soul Gain Prevention (0-19)% increased Projectile Speed CorruptedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. projectiles (including those from monster Sparks) are now 20% slower. Quality on Spark and Vaal Spark is now worth 1% projectile speed per point of quality (rather than 2%). The time that Sparks must travel before they re-arm has been increased from 500ms to 1000ms. Spark projectiles now destroy themselves after travelling 150 units, which is in-line with other projectiles.
2.2.2	Lowered Spark's damage in PvP by 1% per gem level up to level 10, then 2% per gem level (damage reduced by 10% at level 10, and by 30% at level 20). Spark's tendency to completely coat the battlefield in unavoidable damage was making PvP matches extremely unfun, especially at high levels. While this doesn't solve the core issue of spark's unavoidable damage, it should give players a chance to close the gap.
2.1.0	Damage has been increased in damage by 10%, and starts at 4 projectiles, increasing by an additional one at levels 9, 17 and 25.
2.0.0	Damage increased by 76%. Now grants 2% increased projectile speed per 1% quality (was 3% per 1% quality). Critical Strike Chance has been increased from 5% to 6%.
1.2.0	Spark does 20% more damage at all levels. It now bounces off Frost Walls, regardless of whether they are cast by players or monsters. The critical strike chance has been increased from 4% to 5% (this change was not listed in the official patch notes).
1.1.0	Increased the damage of the following skills at low levels: SparkSparkSpell, Projectile, Duration, Lightning Level: (1-20) Cost: (5-21) Mana Cast Time: 0.65 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 190% Projectile Speed: 560Launches unpredictable sparks that move randomly until they hit an enemy or expire.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal1% increased Projectile SpeedProjectiles Pierce 0.1 additional TargetsFires 0.1 additional Projectiles2% of Lightning Damage Converted to Chaos DamageDeals (1-104) to (28-1983) Lightning Damage Base duration is 2 seconds Fires (4-7) additional Projectiles (0-19)% increased Projectile SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket., Cold SnapCold SnapSpell, AoE, Cold, Duration Level: (1-20) Cost: (11-28) Mana Cooldown Time: 3.00 sec Can Store 1 Use(s) Cast Time: 0.85 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 320% Radius: 16Requires Level 16Creates a sudden burst of cold in a targeted area, damaging enemies. This also creates an expanding area which is filled with chilled ground, and deals cold damage over time to enemies. Enemies that die while in the area have a chance to grant Frenzy Charges. The cooldown can be bypassed by expending a Frenzy Charge.Per 1% Quality:1Superior2Anomalous3Divergent0.5% increased Area of Effect1% increased Effect of Chill2% increased Damage with Hits and AilmentsDeals (34-1440) to (51-2160) Cold Damage Base duration is 5 seconds Deals (28.7-1895.4) Base Cold Damage per second 25% chance to gain a Frenzy Charge when an Enemy Dies while in this Skill's Area Modifiers to Spell Damage apply to this Skill's Damage Over Time effect (0-19)% increased Effect of ChillPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket., Ice SpearIce SpearCritical, Spell, Projectile, Cold Level: (1-20) Cost: (8-23) Mana Cast Time: 0.70 sec Critical Strike Chance: 7.00% Effectiveness of Added Damage: 130% Projectile Speed: 1000Requires Level 12Launches shards of ice in rapid succession. After travelling a short distance they change to a second form, which moves much faster and pierces through enemies.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal2% increased Projectile SpeedProjectiles Pierce 0.1 additional Targets1% increased Cold DamageTravels 1% reduced distance before changing formsDeals (22-568) to (33-852) Cold Damage Second form has 600% increased Critical Strike Chance Second form has 300% more Projectile Speed Second form has +(30-49)% to Critical Strike Multiplier Fires an additional ProjectilePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. and to a lesser extent, Freezing PulseFreezing PulseSpell, Projectile, Cold Level: (1-20) Cost: (5-21) Mana Cast Time: 0.65 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 330% Projectile Speed: 1800An icy projectile which has a chance to freeze enemies it passes through. The projectile fades quickly, reducing damage and freezing chance until it dissipates.Per 1% Quality:1Superior2Anomalous3Divergent2% increased Projectile SpeedProjectiles continuously gain Damage, up to 3% more Damage by the time they dissipate Deals 1% less DamageCannot Pierce EnemiesDeals (8-1458) to (12-2188) Cold Damage Projectiles Pierce all Targets Projectiles continuously lose Damage, up to 50% less Damage by the time they dissipate Projectiles have 25% chance to Freeze, which is lost over the first quarter of their flight (0-19)% increased Projectile SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. and Storm CallStorm CallSpell, AoE, Duration, Lightning Level: (1-20) Cost: (6-16) Mana Cast Time: 0.50 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 250%Requires Level 12Sets a marker at a location. After a short duration, lightning strikes the marker, dealing damage around it. When this happens, it will also set off the lightning at any other markers you've cast.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal0.5% increased Area of Effect2% increased Area of Effect 2% reduced Cast Speed0.5% reduced Skill Effect Duration0.25% chance for Lightning to Strike the Marker when CastDeals (21-949) to (39-1762) Lightning Damage Base duration is 1.5 seconds (10-29)% increased Effect of Lightning Ailments +(0-6) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket..
1.0.0	Damage is increased at lower levels. Spark duration has been heavily reduced.
0.11.1	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.
0.11.0b	Fixed a bug where Projectile Speed bonuses did not apply to SparkSparkSpell, Projectile, Duration, Lightning Level: (1-20) Cost: (5-21) Mana Cast Time: 0.65 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 190% Projectile Speed: 560Launches unpredictable sparks that move randomly until they hit an enemy or expire.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal1% increased Projectile SpeedProjectiles Pierce 0.1 additional TargetsFires 0.1 additional Projectiles2% of Lightning Damage Converted to Chaos DamageDeals (1-104) to (28-1983) Lightning Damage Base duration is 2 seconds Fires (4-7) additional Projectiles (0-19)% increased Projectile SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. when used with a Spell Totem SupportSpell Totem SupportSupport, Spell, Totem Icon: T Level: (1-20) Cost & Reservation Multiplier: 200%Requires Level 8Supports spell skills that are not triggered. Instead of casting that spell, you will summon a totem that casts the spell for you.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills have 1% increased Totem Placement speed1% increased Totem Duration1% increased Totem RangeSupported Skills will summon a Totem which uses that Skill Totem lasts 8 seconds Supported Skills deal (49-40)% less Damage Supported Skills have 40% less Cast SpeedThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket..
0.11.0	The base critical strike chance has been reduced from 6% to 4%.
0.10.0	Once a Spark has bounced, it'll only be able to pierce the same target again if it has been more than one second since the last time.
0.9.11i	Fixed the randomness when used with Traps.
0.9.7	Improved the effects. Spark now fires three sparks by default.
0.9.6	Changed Spark to cast four sparks by default, but it is affected less by additional damage from support gems.
0.9.5g	Fixed Spark not being affected by Increased Duration.
0.9.4c	Set the default critical strike chance of Spark (5.5%),
0.9.3e	Reduced damage by 10%.
0.9.3	Spark now defaults to casting two sparks (with reduced damage). This makes it have less variance in outdoors areas.
0.9.1	Increased damage.
0.8.3	Added "Spark" skill