Herald of Ash

Not to be confused with Herald of Ashes.

Herald of Ash is a self-cast buff that reserves mana to increase damage output. See also Herald of Ice and Herald of Thunder.

Skill Functions and Interactions

• Extra Fire Damage: This modifier adds fire damage to all non-damage-over-time sources, including those from spells, attacks, and traps. The amount added is equal to 15% of the damage source's physical damage.

• Burn on kill: While Herald of Ash is active, when an enemy is killed by an attack (but not a spell), enemies within a radius from the killed enemy are burned based on the overkill damage. Overkill damage refers to total excess damage of the killing hit, including non-fire damage. The burning damage is affected by increased Burning Damage and increased Damage Over Time. This damage cannot be reflected.

• Fire Damage: The increased Fire Damage from quality applies globally to all fire damage, including the extra fire damage effect of Herald of Ash. Furthermore, any modifiers to fire and elemental damage from other sources will also affect both components of Herald of Ash.

• Support gems: Any support gems (with the exception of ) linked to the Herald of Ash will only affect the burn damage caused by ignition from overkill damage, not the extra fire damage from physical. For example, linking to Herald of Ash will only apply rarity bonus to the enemies who die from the burn damage caused by Herald of Ash ignition.

• Area of Effect: Area of Effect modifiers from passives, items and gems affect the radius of the on-kill effect.

• Culling Strike: When using an attack with culling strike, the overkill effect will only apply if the damage from the killing hit would have taken the monster to less than 0 life.

Gem level progression

Level				Burns for x% of Overkill Damage	Exp.	Total Exp.
1	16	26	18	N/A	0	0
2	20	31	22	N/A	49725	49725
3	24	37	25	N/A	95714	145439
4	28	42	29	N/A	169595	315034
5	31	46	32	N/A	199345	514379
6	34	50	35	N/A	285815	800194
7	37	54	37	N/A	401344	1201538
8	40	58	40	N/A	554379	1755917
9	43	62	43	N/A	755049	2510966
10	46	66	46	N/A	1016533	3527499
11	49	70	48	N/A	1898602	5426101
12	52	74	51	N/A	1964019	7390120
13	55	78	54	N/A	2573731	9963851
14	58	82	57	N/A	4676439	14640290
15	60	84	59	N/A	3017327	17657617
16	62	87	60	N/A	7823001	25480618
17	64	90	62	N/A	15264208	40744826
18	66	92	64	N/A	26272845	67017671
19	68	95	66	N/A	62872274	129889945
20	70	98	68	N/A	212023122	341913067
21	72	100	70	N/A	N/A	N/A
22	74	N/A	N/A	N/A	N/A	N/A
23	76	N/A	N/A	N/A	N/A	N/A
24	78	N/A	N/A	N/A	N/A	N/A
25	80	N/A	N/A	N/A	N/A	N/A
26	82	N/A	N/A	N/A	N/A	N/A
27	84	N/A	N/A	N/A	N/A	N/A
28	86	N/A	N/A	N/A	N/A	N/A
29	88	N/A	N/A	N/A	N/A	N/A
30	90	N/A	N/A	N/A	N/A	N/A
31	91	N/A	N/A	N/A	N/A	N/A
32	92	N/A	N/A	N/A	N/A	N/A
33	93	N/A	N/A	N/A	N/A	N/A
34	94	N/A	N/A	N/A	N/A	N/A
35	95	N/A	N/A	N/A	N/A	N/A
36	96	N/A	N/A	N/A	N/A	N/A
37	97	N/A	N/A	N/A	N/A	N/A
38	98	N/A	N/A	N/A	N/A	N/A
39	99	N/A	N/A	N/A	N/A	N/A
40	100	N/A	N/A	N/A	N/A	N/A

Strategy

In the case where enemy death occurs uniformly at random with respect to damage dealt, the chance of an enemy dying from a particular hit is proportional to the damage the hit deals. The mean overkill damage for that hit is half the damage of the hit. This makes the mean overkill damage overall equal to

 0.5 * mean (damage2) / mean damage

Video

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The video is outdated. Please note that no longer affect Mana Reservation as it used to.

Alternate skill effects

Name	Cost	Description
Ghostflame Herald of AshGhostflame Herald of AshSkill Gem EffectYour Herald of Ash becomes infused with ghostly fire.	80	Replaces the standard effect on a Herald of Ash skill gem with ghostly green flames. Preview
Gloom Herald EffectGloom Herald EffectSkill Gem EffectYour Herald of Ash, Thunder or Ice becomes a dark effect.	125	Replaces the standard effect on a Herald skill gem with a dark effect. Preview

Related helmet enchantments

The following helmet enchantments affect Herald of Ash.

Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.

Name		Labyrinth	Stats	Spawn Weighting
Enchantment Herald Of Ash Damage 1	66	Merciless Labyrinth	25% increased Herald of Ash Damage	helmet 100
Enchantment Herald Of Ash Damage 2	75	Eternal Labyrinth	40% increased Herald of Ash Damage	helmet 100
Enchantment Herald Of Ash Mana Reservation 1	66	Merciless Labyrinth	Herald of Ash has 40% increased Mana Reservation Efficiency	helmet 0
Enchantment Herald Of Ash Mana Reservation 2	75	Eternal Labyrinth	Herald of Ash has 60% increased Mana Reservation Efficiency	helmet 0
Enchantment Herald Of Ash Mana Reservation 1	66	Merciless Labyrinth	Herald of Ash has 50% increased Mana Reservation Efficiency	helmet 100
Enchantment Herald Of Ash Mana Reservation 2	75	Eternal Labyrinth	Herald of Ash has 75% increased Mana Reservation Efficiency	helmet 100

Version history

Version	Changes
3.0.0	Secondary effect no longer ignites. Instead, enemies near slain enemies are burned based on the overkill damage. Herald tag added.
2.0.0	Radius reduced by 16.5% (from 12 to 10) and base overkill damage reduced to 80% (from 100%).
1.2.0	Herald of Ash has been added to the game.