Infernal Blow

Attack, AoE, Melee, Strike, Fire, Duration

Level: 1–20

Effectiveness of Added Damage: 104–166%

Radius: 15

Requires Level 12

Attacks with your weapon, applying a charged debuff to enemies hit by your strike, and an uncharged debuff to any other enemies hit. Upon reaching 6 charges, expiring, or the enemy's death, the charged debuff is removed, and it deals damage to that and other nearby enemies. Enemies with either debuff explode when they die, damaging other nearby enemies. Damage from this explosion cannot be reflected. Requires a Sword, Axe, Mace, Sceptre, Staff or Unarmed.

Base duration is 0.8 seconds
(5–75) to (8–113) Added Fire Damage
60% of Physical Damage Converted to Fire Damage
Explosion deals base Fire Damage equal to 6% of the corpse's Maximum Life
Debuff deals 66% of Damage per Charge

Additional Effects From Quality:

(0–10)% increased Area of Effect

Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.

Unusual Gems /4

Type	Stats	Weight
Superior	(0–10)% increased Area of Effect	50
Anomalous	Explosion has (0–20)% chance to apply Uncharged Debuff on Hit	20
Divergent	(0–20)% chance to Ignite enemies (0–60)% increased Burning Damage	100
Phantasmal	(0–80)% increased Skill Effect Duration	100

Quest /2

Act	Quest	NPC	Character
1	The Siren's Cadence	Quest Reward	Marauder
1	The Siren's Cadence	Nessa	Duelist · Marauder · Ranger · Scion · Templar

Level Effect /40

Implicit
Cost: 6 60% of Physical Damage Converted to Fire Damage Base duration is 0.8 seconds Explosion deals base Fire Damage equal to 6% of the corpse's Maximum Life Debuff deals 66% of Damage per Charge

Level	Requires Level	Strength	Base Damage	5 to 8 Added Fire Damage	Experience
1	12	33	104%	5, 8	15,249
2	15	39	107.3%	7, 10	41,517
3	19	48	110.5%	8, 13	81,983
4	23	56	113.8%	11, 16	147,968
5	27	64	117.1%	13, 19	250,557
6	31	73	120.3%	16, 24	405,086
7	35	81	123.6%	19, 28	447,718
8	38	88	126.8%	22, 32	615,318
9	41	94	130.1%	25, 37	834,639
10	44	100	133.4%	28, 42	1,570,760
11	47	106	136.6%	32, 47	1,633,987
12	50	113	139.9%	36, 54	2,151,030
13	53	119	143.2%	40, 60	2,812,189
14	56	125	146.4%	45, 68	5,099,360
15	59	132	149.7%	51, 76	9,400,731
16	62	138	152.9%	56, 85	15,273,366
17	64	142	156.2%	61, 91	26,286,582
18	66	146	159.5%	65, 98	62,890,590
19	68	151	162.7%	70, 105	212,046,017
20	70	155	166%	75, 113
21	72		169.3%	81, 122
22	74		172.5%	87, 130
23	76		175.8%	93, 140
24	78		179.1%	100, 150
25	80		182.3%	107, 160
26	82		185.6%	114, 172
27	84		188.8%	123, 184
28	86		192.1%	131, 197
29	88		195.4%	140, 210
30	90		198.6%	150, 224
31	91		200.3%	155, 232
32	92		201.9%	160, 240
33	93		203.5%	165, 248
34	94		205.2%	171, 256
35	95		206.8%	176, 265
36	96		208.4%	182, 273
37	97		210.1%	188, 282
38	98		211.7%	194, 292
39	99		213.3%	201, 301
40	100		214.9%	207, 311

Cost	iLvl 1: Normal: 1xOrb of Transmutation
DropLevel	12
BaseType	Infernal Blow
Class	Active Skill Gems
Weapon	One Hand Swords, Thrusting One Hand Swords, One Hand Axes, One Hand Maces, Staves, Two Hand Swords, Two Hand Axes, Two Hand Maces, Sceptres, , Warstaves
TargetTypes	Ground, Enemy
Type	Attack, Area, MeleeSingleTarget, Multistrikeable, Melee, Fire, Duration
BuffIcon
Metadata	Metadata/Items/Gems/SkillGemInfernalBlow
Reference	poe.ninja

Infernal Blow Monster /2 ⍟

Name	Modifiers	Spectre
Haki Karukaru	monster base type attack cast speed +% and damage -% final [33] 40% Chance to Block Attack Damage You take 20% of Damage from Blocked Hits	Y
Redblade Skullbreaker	monster no map drops [1] 20% Chance to Block Attack Damage You take 10% of Damage from Blocked Hits cannot have affliction mods [1]	Y

Infernal Blow

You will explode if killed, dealing fire damage based on your maximum life. If this debuff has charges, it will deal attack damage in an area around you when it expires or has 6 charges.

base_monster_will_be_deleted_on_death

IsBuffDefinition	1
BuffMergeModesID	4
IsCharged	0
IsInvisible	0
IsRemovable	0
IsSkillBuff	0
BuffGroupsID	-1
MaxStacks	6

Code	base monster will be deleted on death
IsPublic	0
IsLocal	0
IsWeaponLocal	0
IsProxied	0
IsParty	0
IsVirtual	0
IsScalable	0
StatSemantics	Boolean

Microtransactions /1 ⍟

Icon	Name
	Stygian Infernal Blow Effect Your Infernal Blow becomes a Stygian Effect.

Labyrinth Enchantment helmet /8 ⍟

Level	Name	Mod	Weight
The Merciless Labyrinth	Enchantment Infernal Blow Damage 1	25% increased Infernal Blow Damage	75
The Eternal Labyrinth	Enchantment Infernal Blow Damage 2	40% increased Infernal Blow Damage	75
The Merciless Labyrinth	Enchantment Infernal Blow Physical Damage Percent To Add As Fire Damage 1	10% of Infernal Blow Physical Damage gained as Extra Fire Damage	75
The Eternal Labyrinth	Enchantment Infernal Blow Physical Damage Percent To Add As Fire Damage 2	15% of Infernal Blow Physical Damage gained as Extra Fire Damage	75
The Merciless Labyrinth	Enchantment Infernal Blow Area Of Effect 1	16% increased Infernal Blow Area of Effect	75
The Eternal Labyrinth	Enchantment Infernal Blow Area Of Effect 2	24% increased Infernal Blow Area of Effect	75
The Merciless Labyrinth	Enchantment Infernal Blow Increased Damage Per Stack 1	Infernal Blow Debuff deals an additional 3% of Damage per Charge	75
The Eternal Labyrinth	Enchantment Infernal Blow Increased Damage Per Stack 2	Infernal Blow Debuff deals an additional 5% of Damage per Charge	75

Supported By /103 ⍟

Icon	Name
	Added Fire Damage Support Supports any skill that hits enemies.
	Faster Attacks Support Supports attack skills.
	Added Cold Damage Support Supports any skill that hits enemies.
	Additional Accuracy Support Supports attack skills.
	Increased Area of Effect Support Supports any skill with an area of effect.
	Added Lightning Damage Support Supports any skill that hits enemies.
	Increased Critical Strikes Support Supports any skill that hits enemies.
	Increased Critical Damage Support Supports any skill that hits enemies.
	Knockback Support Supports any skill that hits enemies.
	Life Leech Support Supports any skill that hits enemies, causing those hits to leech life based on damage dealt.
	Mana Leech Support Supports attack skills that hit enemies, causing those hits to leech mana based on damage dealt.
	Added Chaos Damage Support Supports any skill that hits enemies.
	Stun Support Supports any skill that hits enemies, making it easier to stun enemies with those skills.
	Melee Physical Damage Support Supports melee attack skills.
	Item Rarity Support Supports any skill that can kill enemies.
	Concentrated Effect Support Supports any skill with an area of effect, regardless of whether that skill deals damage.
	Increased Duration Support Supports any skill with a duration.
	Cold to Fire Support Supports any skill that hits enemies.
	Combustion Support Supports any skill that hits enemies.
	Elemental Damage with Attacks Support Supports attack skills.
	Bloodlust Support Supports melee attack skills, causing them to deal more damage against bleeding enemies, but preventing those skills from inflicting bleeding on enemies in any way.
	Life Gain on Hit Support Supports attack skills.
	Elemental Proliferation Support Supports any skill that hits enemies, or could otherwise apply elemental ailments.
	Culling Strike Support Supports any skill that hits enemies. If enemies are left below 10% of maximum life after being hit by these skills, they will be killed.
	Damage on Full Life Support Supports attack skills, providing a bonus to all damage dealt by those skills while your life is full.
	Chance to Flee Support Supports any skill that hits enemies.
	Blind Support Supports any skill that hits enemies.
	Fire Penetration Support Supports any skill that hits enemies, making those hits penetrate enemy fire resistance.
	Cold Penetration Support Supports any skill that hits enemies, making those hits penetrate enemy cold resistance.
	Lightning Penetration Support Supports any skill that hits enemies, making those hits penetrate enemy lightning resistance.
	Elemental Penetration Support Supports any skill that hits enemies, making those hits penetrate enemy elemental resistances.
	Multistrike Support Supports melee attack skills, making them repeat twice when used, targeting a random enemy each time. Cannot support Vaal skills, channelling skills or triggered skills.
	Melee Splash Support Supports melee strike skills, causing their melee strike to deal splash damage around each target hit.
	Power Charge On Critical Support Supports any skill that hits enemies.
	Burning Damage Support Supports any skill that hits enemies, or can deal burning damage directly.
	Hextouch Support Must support both a skill that hits enemies, and a hex curse skill to work. The hex will be applied when enemies are hit by the other skill. Cannot support totems, traps, or mines. Minions cannot apply hexes this way.
	Cast On Critical Strike Support Must support both an attack skill and a spell skill to work. The attack skill will trigger a spell when it critically strikes an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.
	Cast on Melee Kill Support Must support both a melee attack skill and a spell skill to work. The attack skill will trigger a spell when it kills an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.
	Endurance Charge on Melee Stun Support Supports melee attack skills.
	Less Duration Support Supports any skill that has a duration.
	Block Chance Reduction Support Supports any skill that hits enemies.
	Physical to Lightning Support Supports any skill that hits enemies.
	Fortify Support Supports melee attack skills that are not triggered.
	Ice Bite Support Supports any skill you use to hit enemies yourself. Cannot support skills used by totems, traps, or mines.
	Hypothermia Support Supports any skill that deals damage.
	Innervate Support Supports any skill you use to hit enemies yourself. Cannot support skills used by totems, traps, or mines.
	Critical Strike Affliction Support Supports any skill that hits enemies.
	Void Manipulation Support Supports any skill that deals damage.
	Controlled Destruction Support Supports attack skills, or spell skills that deal damage.
	Swift Affliction Support Supports any skill that has a duration, or can hit enemies to inflict ailments on them.
	Elemental Focus Support Supports any skill that hits or burns enemies, or inflicts elemental ailments.
	Ignite Proliferation Support Supports any skill that hits enemies.
	Chance to Bleed Support Supports attack skills. Cannot support skills that create minions.
	Chance to Poison Support Supports any skill that hits enemies.
	Deadly Ailments Support Supports any skill that hits enemies.
	Decay Support Supports any skill that hits enemies.
	Efficacy Support Supports any skill that deals damage or has a duration.
	Vile Toxins Support Supports any skill that hits enemies.
	Maim Support Supports attack skills, or other skills that can maim enemies.
	Immolate Support Supports any skill that hits enemies.
	Unbound Ailments Support Supports any skill that hits enemies or inflicts ailments
	Brutality Support Supports any skill that deals damage.
	Ruthless Support Supports melee strike or slam skills. Every third time you use a supported attack, that use of the skill will be more powerful.
	Onslaught Support Supports any skill that hits enemies.
	Ancestral Call Support Supports melee strike skills, causing them to also strike at extra targets simultaneously. The extra targets must be a minimum distance from the user. If supporting a minion attack skill, the minion's skills will not also strike extra targets. Cannot support triggered skills.
	Summon Phantasm Support Supports skills that can hit enemies, or create minions. When those skills or minions kill enemies, or hit rare or unique enemies they will have a chance to summon a Phantasm minion, which uses a piercing projectile spell that deals physical damage.
	Withering Touch Support Supports attack skills.
	Bonechill Support Supports any skill that can chill enemies or create chilling areas.
	Energy Leech Support Supports any skill that hits enemies, causing those hits to leech energy shield based on damage dealt.
	Close Combat Support Supports melee attack skills. Cannot support skills which create minions.
	Shockwave Support Supports melee attack skills. Cannot support triggered attacks, attacks used by things other than you, or skills which create minions.
	Impale Support Supports attack skills.
	Pulverise Support Supports melee attack skills.
	Rage Support Supports melee attack skills. Minions cannot gain rage.
	Nightblade Support Supports attack skills. Cannot support skills which create minions.
	Awakened Added Fire Damage Support Supports any skill that hits enemies.
	Awakened Ancestral Call Support Supports melee strike skills, causing them to also strike at extra targets simultaneously. The extra targets must be a minimum distance from the user. If supporting a minion attack skill, the minion's skills will not also strike extra targets. Cannot support triggered skills.
	Awakened Brutality Support Supports any skill that deals damage.
	Awakened Burning Damage Support Supports any skill that hits enemies, or can deal burning damage directly.
	Awakened Elemental Damage with Attacks Support Supports attack skills.
	Awakened Fire Penetration Support Supports any skill that hits enemies, making those hits penetrate enemy fire resistance.
	Awakened Melee Physical Damage Support Supports melee attack skills.
	Awakened Melee Splash Support Supports melee strike skills, causing their melee strike to deal splash damage around each target hit.
	Awakened Multistrike Support Supports melee attack skills, making them repeat three times when used, targeting a random enemy each time. Cannot support Vaal skills, channelling skills or triggered skills.
	Awakened Added Cold Damage Support Supports any skill that hits enemies.
	Awakened Cast On Critical Strike Support Must support both an attack skill and a spell skill to work. The attack skill will trigger a spell when it critically strikes an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.
	Awakened Cold Penetration Support Supports any skill that hits enemies, making those hits penetrate enemy cold resistance.
	Awakened Deadly Ailments Support Supports any skill that hits enemies.
	Awakened Swift Affliction Support Supports any skill that has a duration, or can hit enemies to inflict ailments on them.
	Awakened Void Manipulation Support Supports any skill that deals damage.
	Awakened Added Chaos Damage Support Supports any skill that hits enemies.
	Awakened Added Lightning Damage Support Supports any skill that hits enemies.
	Awakened Controlled Destruction Support Supports attack skills, or spell skills that deal damage.
	Awakened Hextouch Support Must support both a skill that hits enemies, and a hex curse skill to work. The hex will be applied when enemies are hit by the other skill. Cannot support totems, traps, or mines. Minions cannot apply hexes this way.
	Awakened Elemental Focus Support Supports any skill that hits or burns enemies, or inflicts elemental ailments.
	Awakened Increased Area of Effect Support Supports any skill with an area of effect.
	Awakened Lightning Penetration Support Supports any skill that hits enemies, making those hits penetrate enemy lightning resistance.
	Awakened Unbound Ailments Support Supports any skill that hits enemies or inflicts ailments
	Trinity Support Supports skills that hit enemies, causing them to gain bonuses while you have resonance of all three elements, and to grant resonance of elements other than the highest one in a hit. There is a maximum of 50 Resonance for each Element. Cannot support triggered skills, instant skills, orb skills, brands, skills with a reservation, or skills used by totems, traps, or mines. Cannot modify the skills of minions.
	Bloodthirst Support Supports attack skills. Cannot support triggered skills, skills which create minions, or skills used by totems, traps or mines.
	Cruelty Support Supports any skill that hits enemies. Minions cannot gain Cruelty.
	Behead Support Supports strike skills.
	Overcharge Support Supports any skill that hits enemies.

Community Wiki

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Infernal Blow

Infernal Blow is a melee attack skill that converts 60% of Physical Damage to Fire Damage, applying a special debuff to enemies. When the debuff reaches six charges, expires, or the enemy affected by the debuff dies, it releases an explosion that deals fire damage to nearby enemies. This skill requires a sword, axe, mace, staff or unarmed.

Skill functions and interactions

Damage conversion: Like all converted damage, the fire portion of Infernal Blow's damage will be modified by both fire damage increases and physical damage increases.

Duration: If the debuff caused by Infernal Blow is still active when the monster dies, it will explode even if Infernal Blow was not the killing blow. That makes this skill very effective with Melee Splash Support or Ancestral Cry.

Debuffs: When the attack made with Infernal Blow hits an enemy, it applies two debuffs: the first debuff can stack up to six times and creates an explosion that deals damage based on your weapon damage when it reaches full charges or when it expires. The second debuff causes the enemy to create an explosion that deals damage scaling with its maximum life when it dies.

Explosion: The corpse explosion deals fire secondary damage in an area and cannot be reflected. It is neither an attack nor a spell, so in particular it is not affected by modifiers to melee damage, weapon damage or spell damage, but is affected by Elemental Damage with Attack Skills. While in a party, the explosion ignores the increased life added for each player beyond the first and treats the monster's life as if you were solo.1(#1)

The charged debuff explosion deals the exact same damage types as the melee hit, plus area damage.2(#2) Ruthless blows (Ruthless Support) are calculated differently depending on how the charged debuff explosion was caused. If the debuff reaches 6 stacks, then the hit that applied the 6th stack determines whether or not the explosion is Ruthless. If the debuff expires for any other reason (such as the monster dying) then the hit that applied the 1st stack determines whether or not the explosion is Ruthless.3(#3)

Monster Types: Magic (blue named) and rare (yellow named) monsters, and unique monsters (orange named) can be exploded.

Area of effect modifiers will only apply to the explosion itself, not the melee attack.

References

↑ Mark_GGG (February 3, 2013 5:35 AM). "Devs and other GD people - Kripps Death a good thing". Path of Exile Forum. Retrieved August 2, 2013.

↑ Mark_GGG (Jun 6, 2018, 6:22:38 PM). "So I still don't understand the new mechanics of Infernal Blow at all... (Page 1)". Path of Exile Forum. Retrieved November 13, 2018.

↑ Mark_GGG (Jun 7, 2018, 5:47:47 PM). "So I still don't understand the new mechanics of Infernal Blow at all... (Page 2)". Path of Exile Forum. Retrieved November 13, 2018.