Combustion Support

Combustion SupportFire, Support
Icon: i
Level: (1-20)
Cost & Reservation Multiplier: 130%Requires Level 8Supports any skill that hits enemies.Supported Skills deal (10-19)% more Fire Damage
Supported Skills have 25% chance to Ignite
Enemies Ignited by Supported Skills have -10% to Fire Resistance

Additional Effects From 1-20% Quality:
Supported Skills deal (0.5-10)% increased Fire 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 Skill Gem you wish to augment. Right click to remove from a socket.

Acquisition
Drop level: 8Metadata
Item class: Support Gem
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 for the duration of the ignite applying Combustion.

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:

$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}{\text{ChanceToIgnite}}=1-(1-{\text{SkillCritChance}})*(1-{\text{SkillIgniteChance}})$

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: (9-13) Mana
Attack Speed: 80% of base
Attack Damage: (227-417)% of base
Effectiveness of Added Damage: (227-417)%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.Base duration is 4.00 seconds
50% of Physical Damage Converted to Fire Damage
Deals up to 20% more Damage with Hits to closer targets

Additional Effects From 1-20% Quality:
Deals up to +(0.5-10)% more Damage with Hits 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
Cast Time: 0.75 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: (60-80)%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) metresPlace 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 The Three DragonsThe Three Dragons
Golden MaskEvasion: (96-103)
Energy Shield: (20-22)Requires Level 35, 40 Dex, 40 Int+(26-30)% to all Elemental Resistances
Your Fire Damage can Shock but not Ignite
Your Cold Damage can Ignite but not Freeze or Chill
Your Lightning Damage can Freeze but not Shock"The ice seared his naked feet
As the lightning stilled his heart,
But it was the flames upon his lover's face
That roused him to vengeance."
- From 'The Three Dragons' by Victario of Sarn or HrimburnHrimburn
Goathide GlovesEvasion: (72-92)Requires Level 24, 17 Dex+(20-30) to Strength
Adds (5-7) to (13-15) Cold Damage to Spells and Attacks
+(40-50) to Evasion Rating
+(20-30)% to Cold Resistance
100% of Physical Damage Converted to Cold Damage
Reflects 100 Cold Damage to Melee Attackers
Your Cold Damage can IgniteGiant's blood you cannot tame,
as wild as an unwatched flame., or via lightning damage using StormfireStormfire
Opal RingRequires Level 80(15-25)% increased Elemental Damage(40-45)% increased Mana Regeneration Rate
+(20-30)% to Fire and Lightning Resistances
(8-12)% increased Burning Damage for each time you have Shocked a Non-Shocked Enemy Recently, up to a maximum of 120%
Adds (1-3) to (62-70) Lightning Damage to Hits against Ignited Enemies
Your Lightning Damage can IgniteWhen your skin sloughs, and your blood cooks,
you'll wish the lightning strike had killed you..

Gem level progression

Level				more Fire Damage	Exp.	Total Exp.
1	8	0	0	10%	0	0
2	10	0	0	10%	3231	3231
3	13	0	16	11%	9569	12800
4	17	14	20	11%	28189	40989
5	21	16	23	12%	59146	100135
6	25	19	27	12%	111192	211327
7	29	21	31	13%	193800	405127
8	33	24	35	13%	320280	725407
9	37	27	39	14%	507839	1233246
10	40	29	41	14%	554379	1787625
11	43	31	44	15%	755049	2542674
12	46	33	47	15%	1016533	3559207
13	49	35	50	16%	1898602	5457809
14	52	37	53	16%	1964019	7421828
15	55	39	56	17%	2573731	9995559
16	58	41	58	17%	7610839	17606398
17	61	43	61	18%	13436884	31043282
18	64	44	64	18%	25050611	56093893
19	67	46	67	19%	43867388	99961281
20	70	48	70	19%	242078618	342039899
21	72	50	72	20%	—	—
22	74	—	—	20%	—	—
23	76	—	—	21%	—	—
24	78	—	—	21%	—	—
25	80	—	—	22%	—	—
26	82	—	—	22%	—	—
27	84	—	—	23%	—	—
28	86	—	—	23%	—	—
29	88	—	—	24%	—	—
30	90	—	—	24%	—	—
31	91	—	—	24%	—	—
32	92	—	—	25%	—	—
33	93	—	—	25%	—	—
34	94	—	—	25%	—	—
35	95	—	—	25%	—	—
36	96	—	—	26%	—	—
37	97	—	—	26%	—	—
38	98	—	—	26%	—	—
39	99	—	—	26%	—	—
40	100	—	—	27%	—	—

Item acquisition

Combustion Support can drop anywhere.

Recipes

Combustion Support can be created from the following recipes:

Amount	Part	Description	Meta
9	Gift of the Gemling QueenGift of the Gemling Queen9Level 20 Support GemOur Lady Dialla, as a symbol of our progress, shines greater than all the gems.	Random level 20 support gem	A
7	Dialla's SubjugationDialla's Subjugation7Support Gem Quality: +23% CorruptedA symbol of beauty and innocence The gems corrupted her mind Malachai corrupted her gems All but a glimmer of greatness lost in madness	Random corrupted support gem with 23% quality	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

Usage in recipes

Combustion Support is used in the following recipes:

Result	Amount	Part	Notes	Meta
The Goddess ScornedThe Goddess Scorned Elegant SwordOne Handed Sword Physical Damage: (70-80) to (115.5-132) Critical Strike Chance: (9.50-10.50)% Attacks per Second: 1.50 Weapon Range: 1.1 metresRequires Level 28, 46 Str, 55 Dex+190 to Accuracy RatingUses both hand slots (250-300)% increased Physical Damage (90-110)% increased Critical Strike Chance +(20-30)% to Global Critical Strike Multiplier +(40-50)% to Fire Resistance Cannot be Ignited 100% of Physical Damage Converted to Fire Damage Ignites you inflict deal Damage 50% faster You can only deal Damage with this Weapon or IgniteHer purpose seems done; the oath is fulfilled. Rust dulls her smirk with the last demon killed. The embers grow dim and yet hope burns her lips: "An old flame renewed can define our eclipse!"	1	The Goddess BoundThe Goddess Bound Whalebone RapierOne Handed Sword Physical Damage: (14-16) to (59.5-68) Elemental Damage: 3-7 Critical Strike Chance: 5.50% Attacks per Second: 1.92 Weapon Range: 1.4 metresRequires Level 7, 32 Dex+25% to Global Critical Strike Multiplier+1 to Level of Socketed Melee Gems Uses both hand slots (250-300)% increased Physical Damage Adds 3 to 7 Fire Damage 20% increased Attack Speed 30% increased Global Critical Strike Chance +(20-40) to Evasion Rating 20% reduced Rarity of Items found 30% increased Movement Speed when on Low LifeShe paints her offer in wicked hues An off-white grin, an elegant bruise. To the nascent scourge she sings the ruse: "With me in hand, what else need you use?"	With 20% quality.	M
	1	Elegant SwordElegant SwordOne Handed Sword Physical Damage: 20-33 Critical Strike Chance: 5.00% Attacks per Second: 1.50 Weapon Range: 1.1 metresRequires Level 28, 46 Str, 55 Dex+190 to Accuracy Rating	Base type, with 20% quality and which has sockets that exactly match those on the Goddess Bound, number, color and links included.
	1	Combustion SupportCombustion SupportFire, Support Icon: i Level: (1-20) Cost & Reservation Multiplier: 130%Requires Level 8Supports any skill that hits enemies.Supported Skills deal (10-19)% more Fire Damage Supported Skills have 25% chance to Ignite Enemies Ignited by Supported Skills have -10% to Fire Resistance Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Fire 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 Skill Gem you wish to augment. Right click to remove from a socket.	With at least 1% quality.
	1	Orb of FusingOrb of FusingStack Size: 20Reforges the links between sockets on an itemRight click this item then left click a socketed item to apply it. The item's quality increases the chances of obtaining more links.	—

Quest reward

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

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
The Caged Brute 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 Caged Brute Act 1 Nessa
A Fixture of Fate Act 3 Siosa
Fallen from Grace Act 6 Lilly Roth

Version history

Version	Changes
3.22.0	Combustion Support now has Intelligence and Strength attribute requirements instead of pure Intelligence.
3.20.1	Fixed a bug where elemental ailments that have an added effect to things while your ailment is on them, such as through the CombustionCombustion SupportFire, Support Icon: i Level: (1-20) Cost & Reservation Multiplier: 130%Requires Level 8Supports any skill that hits enemies.Supported Skills deal (10-19)% more Fire Damage Supported Skills have 25% chance to Ignite Enemies Ignited by Supported Skills have -10% to Fire Resistance Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Fire 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 Skill Gem you wish to augment. Right click to remove from a socket. or BonechillBonechill SupportCold, Support Icon: B Level: (1-20) Cost & Reservation Multiplier: 130%Requires Level 38Supports any skill that can chill enemies or create chilling areas.(25-44)% increased Effect of Chill inflicted with Supported Skills Enemies Chilled by Supported Skills increase Cold Damage taken by Chill Effect Enemies in Chilling Areas from Supported Skills increase Cold Damage taken by Chill Effect Supported Skills deal (5-14)% more Cold Damage Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Cold 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 Skill Gem you wish to augment. Right click to remove from a socket. Supports, were discarded when a stronger Ignite/Chill was applied without these added effects.
3.15.0d	Combustion Support now has a Cost and Reservation Multiplier of 130% (previously 140%).
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	Added new support gem prototype: Chance to Ignite.