Combustion Support

Combustion SupportFire, Support
Icon: i
Level: (1-20)
Cost & Reservation Multiplier: 120%Requires Level 8Supports any skill that hits enemies.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills deal 0.5% increased Fire DamageIgnites from Supported Skills deal Damage 0.25% fasterIgnites from Supported Skills deal Damage 0.5% slower
Supported Skills deal 1% increased Fire DamageSupported Skills have (30-49)% chance to Ignite
Supported Skills deal (10-29)% more Fire Damage
Enemies Ignited by Supported Skills have -(10-19)% to Fire ResistanceThis 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.Acquisition
Area level: 8Vendor Prices

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1x Orb of Transmutation

Vendor Offer
1x Scroll FragmentMetadata
Item class: Support Skill Gems
Metadata ID: Metadata/Items/Gems/SupportGemChanceToIgnite

Combustion is a support gem that grants supported skills that grants more fire damage and chance to ignite the enemy. Enemies ignited by the supported skill have reduced fire resistance. Note

Skill functions and interactions

Note that even though this skill 'Supports any skill that hits enemies', by default only fire damage can ignite. Therefore it by default only helps skills dealing fire damage, see more on ignite, including uniques that enable other elements to ignite. The fire damage could be supplied by gear or for minions for instance a jewel with 'Minions deal additional Fire Damage'.

The Chance to Ignite an enemy given by this gem is independent of the chance to ignite an enemy as a result of a critical strike. The overall probability that an enemy will be ignited is:

<math display="" style="background-color:transparent; padding:0;"> \color[RGB]{163,141,109} \text{ChanceToIgnite} = 1-(1 - \text{SkillCritChance}) * (1 - \text{SkillIgniteChance})

   </math>

It is worth noting that as opposed to chance to critical strike, which is checked once for each cast of the skill, the chance to ignite is checked separately for each individual hit. For example, a hit from Consecrated PathConsecrated PathFire, Attack, AoE, Movement, Duration, Slam, Melee
Level: (1-20)
Cost: 8 Mana
Attack Speed: 80% of base
Attack Damage: (150-184)% of base
Effectiveness of Added Damage: (150-184)%Requires Level 28Slams the ground at a targeted location. If an enemy is near where you target, you'll teleport to it from a short distance away, slam, and create an area of consecrated ground. Can't be supported by Multistrike, and requires a Sword, Axe, Mace, Sceptre, Staff or Unarmed.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal0.5% increased Area of Effect0.5% increased Attack Speed0.5% increased teleport range2% increased Consecrated Ground AreaDeals (150-184.25)% of Base Attack Damage
50% of Physical Damage Converted to Fire Damage
Base duration is 4 seconds
Deals up to 20% more Damage to closer targetsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. linked with Combustion that hits two enemies at once could potentially ignite one enemy, but not the other.

The chance to Ignite from this gem will stack additively with chance to Ignite modifiers from other sources, such as from the Ash, Frost and Storm notable passive skill, or the stat of FirestormFirestormSpell, AoE, Duration, Fire
Level: (1-20)
Cost: (13-25) Mana
Soul Gain Prevention: 0 sec
Cast Time: 0.75 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 55%Requires Level 28Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies.Per 1% Quality:1Superior2Anomalous3Divergent1% increased DamageFirst Impact deals 3% more Damage with Hits and Ailments
Base duration is 0.003 seconds1% reduced Enemy Stun ThresholdBase duration is 1.4 seconds
Deals (22-207) to (33-311) Fire Damage
One impact every 0.2 seconds
First Impact deals 325% more Damage with Hits and Ailments
First Impact has 100% more Area of Effect
Maximum 3 Firestorms at a timePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket..

The normal rules for burning apply, linking this gem to a skill that deals no fire damage is pointless; unless the user is igniting enemies via cold damage skills with or , or via lightning damage using .

Gem level progression

Level					Cost and Reservation Multiplier	Critical Strike Chance	Mana Cost	Damage Effectiveness	Stored Uses	Cooldown	Vaal souls	Stored Uses	Soul Prevention Time	Attack Damage	Base duration	Attack Speed	Ignite Chance	more Fire Damage	resistance reduction	Exp.	Total Exp.
1	8	0	0	18	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	30%	10%	-10%	0	0
2	10	0	0	21	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	31%	11%	-10%	3231	3231
3	13	0	0	25	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	32%	12%	-11%	9569	12800
4	17	0	0	31	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	33%	13%	-11%	28189	40989
5	21	0	0	37	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	34%	14%	-12%	59146	100135
6	25	0	0	43	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	35%	15%	-12%	111192	211327
7	29	0	0	49	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	36%	16%	-13%	193800	405127
8	33	0	0	55	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	37%	17%	-13%	320280	725407
9	37	0	0	61	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	38%	18%	-14%	507839	1233246
10	40	0	0	66	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	39%	19%	-14%	554379	1787625
11	43	0	0	70	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	40%	20%	-15%	755049	2542674
12	46	0	0	75	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	41%	21%	-15%	1016533	3559207
13	49	0	0	79	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	42%	22%	-16%	1898602	5457809
14	52	0	0	84	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	43%	23%	-16%	1964019	7421828
15	55	0	0	88	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	44%	24%	-17%	2573731	9995559
16	58	0	0	93	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	45%	25%	-17%	7610839	17606398
17	61	0	0	97	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	46%	26%	-18%	13436884	31043282
18	64	0	0	102	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	47%	27%	-18%	25050611	56093893
19	67	0	0	106	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	48%	28%	-19%	43867388	99961281
20	70	0	0	111	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	49%	29%	-19%	242078618	342039899
21	72	0	0	114	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	50%	30%	-20%	-342039899	0
22	74	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	51%	31%	-20%	0	0
23	76	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	52%	32%	-21%	0	0
24	78	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	53%	33%	-21%	0	0
25	80	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	54%	34%	-22%	0	0
26	82	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	55%	35%	-22%	0	0
27	84	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	56%	36%	-23%	0	0
28	86	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	57%	37%	-23%	0	0
29	88	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	58%	38%	-24%	0	0
30	90	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	59%	39%	-24%	0	0
31	91	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	59%	39%	-24%	0	0
32	92	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	60%	40%	-25%	0	0
33	93	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	60%	40%	-25%	0	0
34	94	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	61%	41%	-25%	0	0
35	95	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	61%	41%	-25%	0	0
36	96	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	62%	42%	-26%	0	0
37	97	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	62%	42%	-26%	0	0
38	98	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	63%	43%	-26%	0	0
39	99	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	63%	43%	-26%	0	0
40	100	0	0	0	0%	0%	0	0%	0	0.00 sec	0	0	0 sec	0%	0.00 sec	0%	64%	44%	-27%	0	0

Version history

Version	Changes
3.15.0	Now has a 140% Cost and Reservation Multiplier (previously 120%). Supported Skills now have 25% chance to Ignite (previously 30-49%). Supported Skills now deal 10-19% more Fire Damage (previously 10-29%). Enemies Ignited by Supported Skills now have -10% to Fire Resistance (previously -10-19%).
3.3.0	The Chance to Ignite Support Gem has been renamed to Combustion Support. Enemies ignited by supported skills lose up to 19% fire resistance. At gem level 20, it has 29% more fire damage, 49% chance to ignite, and -19% fire resistance on ignited enemies.
3.0.0	Chance to Ignite now grants 10% more Fire Damage at gem level 1, up to 29% more Fire Damage at gem level 20.
0.9.9	Increased mana cost multiplier from 100% to 110%.
0.9.4e	Fixed a bug where Chance to Ignite did not scale properly under the Elemental Weakness curse.
0.9.3	Chance to Ignite has been added to the game.

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