Herald of Ash

Not to be confused with the unique monster, Herald of Ashes.

Herald of Ash is a Herald skill. It reserves mana to grant more fire damage to spells and additional fire damage based on physical damage. Enemies you kill while Herald of Ash is active will explode and burn nearby enemies for a portion of the overkill damage.

Skill functions and interactions

• Extra Fire Damage: This modifier adds fire damage to all hits, including those from attacks, spells, and secondary damage sources. 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, enemies within a radius from the killed enemy receive a burning debuff based on the overkill damage. Overkill damage refers to total excess damage of the killing hit over the monster's remaing Life and Energy shield, including non-fire damage. The burning damage is affected by increased/more Burning Damage and increased/more Damage Over Time, as well as damage over time multipliers that apply to all damage or Fire damage. The debuff is not an Ignite, and is not affected by modifiers to Ignite or Ailments.

• Increased Fire Damage: The Buff grants 0.75% increased Fire Damage from quality applies globally to all fire damage, including the extra fire damage effect of Herald of Ash.

• More Spell Fire Damage: The more Spell Fire Damage applies globally to all spells, including spells with Modifiers to Spell Damage apply to this Skill's Damage Over Time effect. It does not apply to damage over time from spells without this modifier, such as .

• More Burning Damage: Unlike the more Spell Fire Damage, the more Burning Damage is not global. It only affects the burning debuff created by Herald of Ash itself.

• Support gems: Any support gems (with the exception of ) linked to the Herald of Ash will only affect the burn damage caused by the debuff, not the global modifiers. 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.

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

Gem level progression

Level				More Spell Fire Damage	More Burning Damage	Exp.	Total Exp.
1	16	26	18	9%	N/A	0	0
2	20	31	22	9%	2%	49725	49725
3	24	37	25	9%	4%	95714	145439
4	28	42	29	9%	6%	169595	315034
5	31	46	32	9%	8%	199345	514379
6	34	50	35	10%	10%	285815	800194
7	37	54	37	10%	12%	401344	1201538
8	40	58	40	10%	14%	554379	1755917
9	43	62	43	10%	16%	755049	2510966
10	46	66	46	10%	18%	1016533	3527499
11	49	70	48	11%	20%	1898602	5426101
12	52	74	51	11%	22%	1964019	7390120
13	55	78	54	11%	24%	2573731	9963851
14	58	82	57	11%	26%	4676439	14640290
15	60	84	59	11%	28%	3017327	17657617
16	62	87	60	12%	30%	7823001	25480618
17	64	90	62	12%	32%	15264208	40744826
18	66	92	64	12%	34%	26272845	67017671
19	68	95	66	12%	36%	62872274	129889945
20	70	98	68	12%	38%	212023122	341913067
21	72	100	70	13%	40%	N/A	N/A
22	74	N/A	N/A	13%	42%	N/A	N/A
23	76	N/A	N/A	13%	44%	N/A	N/A
24	78	N/A	N/A	13%	46%	N/A	N/A
25	80	N/A	N/A	13%	48%	N/A	N/A
26	82	N/A	N/A	14%	50%	N/A	N/A
27	84	N/A	N/A	14%	52%	N/A	N/A
28	86	N/A	N/A	14%	54%	N/A	N/A
29	88	N/A	N/A	14%	56%	N/A	N/A
30	90	N/A	N/A	14%	58%	N/A	N/A
31	91	N/A	N/A	14%	59%	N/A	N/A
32	92	N/A	N/A	15%	60%	N/A	N/A
33	93	N/A	N/A	15%	61%	N/A	N/A
34	94	N/A	N/A	15%	62%	N/A	N/A
35	95	N/A	N/A	15%	63%	N/A	N/A
36	96	N/A	N/A	15%	64%	N/A	N/A
37	97	N/A	N/A	15%	65%	N/A	N/A
38	98	N/A	N/A	15%	66%	N/A	N/A
39	99	N/A	N/A	15%	67%	N/A	N/A
40	100	N/A	N/A	15%	68%	N/A	N/A

Related helmet enchantments

The following helmet enchantments affect Herald of Ash.

Related unique items

The following unique items are related to Herald of Ash:

Related passive skills

The following passive skills are related to Herald of Ash:

Alternate skill effects

Herald of Ash has the following alternate skill effects:

Version history

Version	Changes
3.11.1	Clarified that the "x% increased Fire Damage" from 's quality stat is dependent on having the Herald of Ash buff.
3.11.0	The visual effects have been improved.
3.4.0	Now instant by default and can therefore be used while moving. All instant skills now have cooldown 1 second or less. Instant skills cannot be supported by Spell Echo and will not be cast a second time by similar effects (such as from the Echoing Shrine).
3.2.0	Herald of Ash now also provides more Spell Fire Damage, and can trigger the overkill burn from spells.
3.0.0	Secondary effect no longer ignites. Instead, enemies near slain enemies are burned based on the overkill damage. Added Herald gem tag.
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.