Incinerate

IncinerateSpell, Fire, Channelling, AoE
Level: (1-20)
Cost: (2-4) Mana
Cast Time: 0.20 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: 30%Requires Level 12Continuously launches a torrent of fire from your hand, repeatedly damaging enemies. As you channel this spell longer, the flames spread wider close to you and spread longer directly in front of you. When you stop channelling you release a wave of fire damage over a wide and long area that will apply a powerful Ignite.Per 1% Quality:1Superior2Anomalous3Divergent1% increased Fire Damage0.5% increased Area of Effect0.2% more Damage with Hits and Ailments for each stage
Final wave deals -10% more Damage with Hits
Final wave deals -10% more Damage with IgniteDeals (3-140) to (5-210) Fire Damage
8 maximum stages
Final wave deals 500% more Damage with Ignite
Final wave deals 500% more Damage with Hits
25% more Damage with Hits and Ailments for each stage
+(4-5) to radius per stage, up to +(15-19)
100% increased angle per stage, up to 300%
Final wave always IgnitesPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.Acquisition
Area level: 12Vendor Prices

Normal

1x Orb of Transmutation

Vendor Offer
1x Scroll FragmentMetadata
Item class: Active Skill Gems
Metadata ID: Metadata/Items/Gems/SkillGemIncinerate

Incinerate is a channeling fire spell that launches a torrent of fire from the user's hands, rapidly dealing fire damage. The longer the channel is held, the bigger the damage and area becomes. Releasing the channel launches a wave of fire that deals more fire and ignite damage.

Skill functions and interactions

• Incinerate gains more damage when cast continuously from one spot, up to a maximum of 200% more damage (25% per stage up to 8 stages maximum, or 10 if you use the helmet enchantment). The next stage is reached after every tick (0.2s). At each stage, the flames become visibly larger and will spread out in a huge cone. If the player is stunned or interrupted in any way while casting incinerate, the spell will come back to stage 1.

• Damage Effectiveness: The damage effectiveness of Incinerate is a relatively low 30%. However, at the highest stage of Incinerate, flat damage (such as from Herald of ThunderHerald of ThunderSpell, AoE, Duration, Lightning, Herald
  Level: (1-20)
  Reservation: 25% Mana
  Cooldown Time: 1.00 sec
  Can Store 1 Use(s)
  Cast Time: Instant
  Radius: 32Requires Level 16Grants a buff which adds lightning damage to spells and attacks. If you kill a shocked enemy, this skill will create a storm, causing lightning bolts to strike enemies around you for a duration. The damage inflicted by this skill is not affected by modifiers to spell damage.Per 1% Quality:1Superior2Anomalous3DivergentBuff grants 0.75% increased Lightning Damage1% increased Skill Effect DurationBuff grants 1.5% increased Damage
  Buff grants 0.5% increased Damage takenBuff grants (2-19) to (7-76) Added Spell Lightning Damage
  Buff grants (2-19) to (7-76) Added Attack Lightning Damage
  Deals (1-23) to (31-1108) Lightning Damage
  Base duration is 6 seconds
  Storm Hits an Enemy every 0.25 Seconds
  Cannot inflict Shock
  Creates a storm when you Kill a Shocked EnemyPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket., Herald of IceHerald of IceSpell, AoE, Cold, Herald
  Level: (1-20)
  Reservation: 25% Mana
  Cooldown Time: 1.00 sec
  Can Store 1 Use(s)
  Cast Time: Instant
  Effectiveness of Added Damage: 80%Requires Level 16Grants a buff adding cold damage to spells and attacks. If you shatter an enemy, this skill will cause them to explode and deal AoE cold damage to enemies near them. This damage is not affected by modifiers to spell damage.Per 1% Quality:1Superior2Anomalous3DivergentBuff grants 0.75% increased Cold Damage0.5% increased Area of EffectBuff grants 0.5% chance to FreezeAdds (4-38) to (5-56) Cold Damage to Spells
  Adds (4-38) to (5-56) Cold Damage to Attacks
  Deals (18-308) to (26-462) Cold Damage
  Damage cannot be ReflectedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket., Added Lightning Damage SupportAdded Lightning Damage SupportLightning, Support
  Icon: L
  Level: (1-20)
  Cost & Reservation Multiplier: 120%Requires Level 8Supports any skill that hits enemies.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills deal 0.5% increased Lightning DamageSupported Skills have 1.5% increased Critical Strike ChanceSupported Skills have 1% of Physical Damage Converted to Lightning DamageSupported Skills have (1-21) to (8-402) added Lightning DamageThis 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., or Added Chaos Damage SupportAdded Chaos Damage SupportChaos, Support
  Icon: H
  Level: (1-20)
  Cost & Reservation Multiplier: 120%Requires Level 31Supports any skill that hits enemies.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills deal 0.5% increased Chaos DamageSupported Skills Penetrate 0.25% Chaos ResistanceSupported Skills have 1% of Physical Damage Converted to Chaos DamageSupported Skills have (17-170) to (26-255) added Chaos DamageThis 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., etc.) is added to Incinerate at 90% their normal values because of the 200% more damage modifier.^{[confirmation needed because of 3.3.0 change]}

• Incinerate cannot be supported by Spell Echo SupportSpell Echo SupportSpell, Support
  Icon: k
  Level: (1-20)
  Cost & Reservation Multiplier: 150%Requires Level 38Supports spell skills, making them repeat when cast. Cannot support Vaal skills, totem skills, channelling skills, triggered skills, instant skills, or skills which reserve mana.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills deal 0.5% increased Spell DamageSupported Skills have 0.5% increased Cast SpeedSupported Skills deal 1% less Damage
  Final Repeat of Supported Skills deals 3% more DamageSupported Skills Repeat an additional time
  Supported Skills have (40-54)% more Cast Speed
  Supported Skills deal 10% less DamageThis 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..

• Traps and Mines: This spell can't be supported by traps or mines, because of its Channeling tag.
• Spell Totem Support: Totems that use Incinerate will automatically release upon reaching maximum stacks or when the enemy they're targeting dies.

Gem level progression

Level			Mana Cost	Fire Damage	Radius per stage	Exp.	Total Exp.
1	12	33	2	3 to 5	4	0	0
2	15	39	2	4 to 6	4	15249	15249
3	19	48	2	6 to 8	4	41517	56766
4	23	56	2	8 to 11	4	81983	138749
5	27	64	2	10 to 15	4	147968	286717
6	31	73	2	13 to 20	4	250557	537274
7	35	81	3	17 to 26	4	405086	942360
8	38	88	3	21 to 32	4	447718	1390078
9	41	94	3	26 to 38	5	615318	2005396
10	44	100	3	31 to 46	5	834639	2840035
11	47	106	3	37 to 55	5	1570760	4410795
12	50	113	3	44 to 66	5	1633987	6044782
13	53	119	4	53 to 79	5	2151030	8195812
14	56	125	4	63 to 95	5	2812189	11008001
15	59	132	4	75 to 113	5	5099360	16107361
16	62	138	4	89 to 134	5	9400731	25508092
17	64	142	4	100 to 150	5	15273366	40781458
18	66	146	4	112 to 168	5	26286582	67068040
19	68	151	4	125 to 188	5	62890590	129958630
20	70	155	4	140 to 210	5	212046017	342004647
21	72	159	4	157 to 235	5	N/A	N/A
22	74	N/A	5	175 to 262	5	N/A	N/A
23	76	N/A	5	195 to 293	5	N/A	N/A
24	78	N/A	5	218 to 326	5	N/A	N/A
25	80	N/A	5	243 to 364	6	N/A	N/A
26	82	N/A	5	270 to 406	6	N/A	N/A
27	84	N/A	5	301 to 452	6	N/A	N/A
28	86	N/A	5	335 to 503	6	N/A	N/A
29	88	N/A	5	373 to 560	6	N/A	N/A
30	90	N/A	5	415 to 623	6	N/A	N/A
31	91	N/A	5	438 to 657	6	N/A	N/A
32	92	N/A	5	462 to 693	6	N/A	N/A
33	93	N/A	5	487 to 730	6	N/A	N/A
34	94	N/A	5	513 to 770	6	N/A	N/A
35	95	N/A	6	541 to 812	6	N/A	N/A
36	96	N/A	6	570 to 855	6	N/A	N/A
37	97	N/A	6	601 to 902	6	N/A	N/A
38	98	N/A	6	633 to 950	6	N/A	N/A
39	99	N/A	6	668 to 1001	6	N/A	N/A
40	100	N/A	6	703 to 1055	6	N/A	N/A

Item acquisition

Upgrade paths

This item can be acquired through the following upgrade paths or vendor recipes:

Amount	Ingredient	General Notes	Type
8	Dying AnguishDying Anguish8Level 19 Gem Alternative 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	Automatic
1	Gemcutter's IncubatorGemcutter's IncubatorAdds an incubated Quality Gem item to an equippable item Item drops after killing # monstersQuality GemRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.	random superior gem	Automatic
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	Automatic
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	Automatic
3	Gemcutter's PromiseGemcutter's Promise3Superior Gem 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	Automatic
1	The VoidThe Void1Reach into the Void and claim your prize.	random divination card set exchange	Automatic

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	✓

Basic Mathematical Modelling

The following calculation aims towards characters that have a critical strike chance of either 0% or a critical strike multiplier that is strictly 100% (e.g. for characters with the keystones Resolute Technique or Elemental Overload allocated). It can be easily extended to account for critical hits which can be implemented as a multiplicative factor to the skills average base damage.

The additional damage from ignite is assumed to be negligible. Characters that specialise in burning damage are aiming towards the largest ignite damage possible and always want to release at maximum stage if possible.

Under these assumptions, one can calculate the average base damage dealt per second (depending on the current stage n) via

$\color[RGB]{163,141,109} \begin{align} \text{DPS(n)} = \frac{\text{DMG}_{min} + \text{DMG}_{max} }{2 \cdot \text{CastTime} } \left(1 + \frac{n}{4}\right) \end{align}$

Similarly, the average damage upon release can be calculated to be

$\color[RGB]{163,141,109} \text{ReleaseDPS} = \frac{\text{DMG}_{min} + \text{DMG}_{max} }{2 \cdot n \cdot \text{CastTime} } \left(6 + \frac{n}{4}\right)$

One also finds

$\color[RGB]{163,141,109} \begin{align} \text{RampUpDPS} &= \frac{1}{n_{max} + 1 }\frac{\text{DMG}_{min} + \text{DMG}_{max} }{2 \cdot \text{CastTime} } \sum_{k = 0}^{n_{max} }\left(1+\frac{k}{4}\right) \\&= \frac{\text{DMG}_{min} + \text{DMG}_{max} }{2 \cdot \text{CastTime} } \frac{n_{max}+8}{8} \end{align}$

for the average ramp-up DPS when building stages. To calculate the average damage dealt by repeatedly releasing at maximum stages, we have to sum the latter two formulas as follows

$\color[RGB]{163,141,109} \begin{align} \text{FinalDPSContinuedReleasing} &= \text{RampUpDPS} + \text{ReleaseDPS} \\ &=\frac{\text{DMG}_{min} + \text{DMG}_{max} }{2 \cdot \text{CastTime} } \left[\frac{1}{n_{max} } \left(6 + \frac{n_{max} }{4}\right) + \frac{n_{max} + 8}{8}\right] \\ \text{FinalDPSContinuedFire} &= \frac{\text{DMG}_{min} + \text{DMG}_{max} }{2 \cdot \text{CastTime} } \left[1 + \frac{n_{max} }{4}\right] \end{align}$

For ${\textstyle \color[RGB]{163,141,109} n_{max} = 8 }$ both brackets are equal, i.e. there is no difference in DPS. However, for $\color[RGB]{163,141,109} n_{max} > 8$ it is inefficient to continually release a damaging wave when reaching maximum stages as a simple numerical evaluation of both brackets shows.

Curiously, note that this calculation holds true for arbitrary ${\textstyle \color[RGB]{163,141,109} n_{\text{Release} } }$, which implies a significant increase in DPS the earlier the skill is released. For example, a character that has ${\textstyle \color[RGB]{163,141,109} n_{max} = 8 }$, but keeps releasing at ${\textstyle \color[RGB]{163,141,109} n = 4 }$, gains an additional 58.3% DPS over a character with identical stats that keeps channeling at 8 stages and never releases.

Related helmet enchantments

The following helmet enchantments affect Incinerate.

Name		Stats	Spawn Weighting
Enchantment Incinerate Area Of Effect 1	66	Incinerate has 16% increased Area of Effect	helmet 100 default 0
Enchantment Incinerate Area Of Effect 2	75	Incinerate has 24% increased Area of Effect	helmet 100 default 0
Enchantment Incinerate Damage 1	66	25% increased Incinerate Damage	helmet 100 default 0
Enchantment Incinerate Damage 2	75	40% increased Incinerate Damage	helmet 100 default 0
Enchantment Incinerate Damage Per Stage 3	75	10% increased Incinerate Damage for each stage	helmet 100 default 0
Enchantment Incinerate Maximum Stages 1	66	Incinerate has +1 to maximum stages	helmet 100 default 0
Enchantment Incinerate Maximum Stages 2	75	Incinerate has +2 to maximum stages	helmet 100 default 0

Alternate skill effects

Incinerate has the following alternate skill effects:

Item	Effect(s)
Blue Flame Incinerate EffectBlue Flame Incinerate EffectSkill Gem EffectYour Incinerate becomes a ghostly blue flame.	Your Incinerate becomes a ghostly blue flame.

Version history

Version	Changes
3.11.0	The visual effects have been improved.
3.6.0	Mana Cost at gem level 1 is now 2 (was 3). Mana Cost at gem level 20 is now 4 (was 5). Now gains radius and radius per stage as the gem levels, up to +5 radius per stage (from +4) and +19 radius at max stages at gem level 20 (from +15). Now deals 3 to 5 Fire damage at gem level 1 (unchanged) and 140 to 210 Fire damage at level 20 (from 129 to 194
3.3.0	Now deals area-of-effect damage in a cone in front of the caster while channelling, dealing 25% more damage with hits and ailments for each stage. The angle of the cone increases by up to 300% while channelling. When the channeling ends, a final wave is released which deals 500% more damage with hits and Ignite. This final wave always ignites. Now increases fire damage by 1% per 1% quality on the skill gem (previously increased projectile speed by 2% per 1% quality).
2.4.0	Added a channelled skill system. Incinerate, FlameblastFlameblastSpell, AoE, Fire, Channelling Level: (1-20) Cost: (4-7) Mana Cast Time: 0.20 sec Critical Strike Chance: 5.00% Effectiveness of Added Damage: 60%Requires Level 28Channels to build up a large explosion, which is released when you stop using the skill. The longer you channel, the larger the area of effect and damage of the explosion, up to 10 stages.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal1% increased Damage1% chance to Poison on Hit0.1 maximum Stages 1% less Cast Speed+0.5 to radius 0.5% less Area of Effect per StageDeals (31-280) to (46-419) Fire Damage 110% more Spell Damage for each stage 90% more Damage with Ailments for each stage 50% chance to Ignite enemies +3 to Radius for each Stage 10 maximum StagesPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. and WitherWitherSpell, AoE, Duration, Chaos, Channelling Level: (1-20) Cost: (3-9) Mana Cast Time: 0.28 secRequires Level 10Casts a debilitating debuff on enemies in an area, hindering their movement and also inflicts the Withered debuff, which increases the Chaos Damage they take and can stack up to 15 times.Per 1% Quality:1Superior2Anomalous3Divergent1% increased Skill Effect DurationHindered Enemies deal 0.2% reduced Chaos Damage5% chance to apply an additional Withered Debuff if you Cast this Spell yourself(30-36)% reduced Movement Speed 6% increased Chaos Damage taken Base duration is 0.5 seconds Withered lasts 2 seconds (0-19)% increased Area of EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. are now channelled skills. Unlike other skills, which are used once and quickly finish, when you use a channelled skill, it doesn't finish until you release the relevant button/key. You continue performing the same skill. You need to pay mana repeatedly to keep the skill going. The channelled skill's mana cost must be paid again to maintain it with a frequency determined by the cast time. If you can't pay, the skill will end, just as if you'd lifted the button. Dying, being stunned, and other game mechanics that interrupt the use of skills will cause channelling to end as well. Effects which trigger when you use a skill will only trigger when you initially start channelling - regardless of how long you maintain a channelled skill, it's still the same use of the skill. You need to stop channelling if you want to use it again.
2.1.0	No longer affected by Spell Echo, as was intended in 2.0.0. Incinerate now only adds 50% more damage for each stage, down from 100% more damage. Incinerate's damage has been increased by 15% at level 1 and reduced by approximately 8% at level 20.
2.0.0	Damage increased by approximately 100% to compensate for the shotgunning mechanic change. Base Cast Speed has been increased from a cast time of 240ms to 200ms.
1.0.4	Now has a cast time of 240 milliseconds instead of 160. Damage has been increased by 77% per cast and damage effectiveness for supports has been adjusted from 20% to 30%. The number of stacks required to progress through a stage has been reduced to four casts.
0.11.4	Incinerate now has an informational icon which displays what stage it is in when you continue to cast it.
0.11.3	Now progresses through the damage stages faster and does more damage at later stages. The mana cost has been reduced at higher skill levels.
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.
0.10.5	Mana cost progression has been reduced—higher levels cost less mana to use.
0.10.3	Increased the damage by 12.5%.
0.10.2	Incinerate has been added to the game.