Herald of Thunder

This page is about the skill gem. For the unique monster, see Herald of Thunder (unique monster).

Herald of Thunder is a Herald skill. It reserves mana to grant added lightning damage to attacks and spells. Whenever you kill a shocked enemy, it will activate an effect where lightning bolts strike nearby enemies for a duration.

Mechanics

Similar to the and skill gems, Herald of Thunder has two separate effects.

The first effect adds x-y lightning damage to both spells and attacks. Damage dealt by this effect can not shock.

The second effect is triggered when a shocked enemy is killed. A Storm will strike enemies and destructible objects within Herald of Thunder's radius for its duration dealing lightning secondary damage. This storm remains centered on the character's location if the character moves. Damage dealt by the storm cannot inflict shock, and is not an area of effect.

The storm will strike an enemy or destructible object every 250ms, but will prioritise targets that have been struck fewer times.

The storm from Herald of Thunder applies to enemies killed by attacks as well as spells, but not if they are killed by minions, traps, mines, or totems.

Interactions

• Elemental Damage: Elemental and lightning damage modifiers affect both the on-hit and on-kill effects of Herald of Thunder. Added damage from support gems such as and only applies to Herald of Thunder's storm.

• Casting and Spell Interactions: Because Herald of Thunder's lightning bolts is secondary damage and not spell damage it is not directly affected by items, support gems, or passive skills which specifically modify spells.

• Area of Effect: AoE modifiers like and affect the radius in which Herald of Thunder's storm can strike targets. Lightning bolts are not AoE damage, therefore Area Damage modifiers don't affect the storm's damage.

• Duration: Duration modifiers like and affect the duration of the storm.

• Auras, Buffs and Mana Reservation: Like and , Herald of Thunder is not an aura and does not receive bonuses from aura nodes, items, or support gems. It does reserve mana however, and it therefore benefits from reduced Mana Reserved modifiers.

• Quality: Herald of Thunder's increased lightning damage quality bonus is global, meaning that it affects the character's lightning damage from all sources, not only Herald of Thunder.

• Cannot Apply Shock: Herald of Thunder's on-kill effect cannot apply Shock. However, if is equipped, the storm can apply Freeze.

Gem level progression

Level			Spell Lightning Damage	Attack Lightning Damage	Lightning Damage	Exp.	Total Exp.
1	16	41	N/A	N/A	1 to 31	0	0
2	20	50	N/A	N/A	1 to 42	49725	49725
3	24	58	N/A	N/A	1 to 58	95714	145439
4	28	67	N/A	N/A	2 to 78	169595	315034
5	31	73	N/A	N/A	2 to 96	199345	514379
6	34	79	N/A	N/A	3 to 120	285815	800194
7	37	85	N/A	N/A	3 to 147	401344	1201538
8	40	92	N/A	N/A	4 to 179	554379	1755917
9	43	98	N/A	N/A	4 to 218	755049	2510966
10	46	104	N/A	N/A	5 to 264	1016533	3527499
11	49	111	N/A	N/A	7 to 317	1898602	5426101
12	52	117	N/A	N/A	8 to 380	1964019	7390120
13	55	123	N/A	N/A	10 to 453	2573731	9963851
14	58	130	N/A	N/A	11 to 539	4676439	14640290
15	60	134	N/A	N/A	13 to 611	3017327	17657617
16	62	138	N/A	N/A	15 to 691	7823001	25480618
17	64	142	N/A	N/A	16 to 779	15264208	40744826
18	66	146	N/A	N/A	18 to 878	26272845	67017671
19	68	151	N/A	N/A	20 to 986	62872274	129889945
20	70	155	N/A	N/A	23 to 1108	212023122	341913067
21	72	159	N/A	N/A	26 to 1230	N/A	N/A
22	74	N/A	N/A	N/A	29 to 1364	N/A	N/A
23	76	N/A	N/A	N/A	32 to 1512	N/A	N/A
24	78	N/A	N/A	N/A	36 to 1675	N/A	N/A
25	80	N/A	N/A	N/A	40 to 1854	N/A	N/A
26	82	N/A	N/A	N/A	45 to 2050	N/A	N/A
27	84	N/A	N/A	N/A	50 to 2264	N/A	N/A
28	86	N/A	N/A	N/A	56 to 2500	N/A	N/A
29	88	N/A	N/A	N/A	62 to 2758	N/A	N/A
30	90	N/A	N/A	N/A	68 to 3041	N/A	N/A
31	91	N/A	N/A	N/A	72 to 3194	N/A	N/A
32	92	N/A	N/A	N/A	76 to 3347	N/A	N/A
33	93	N/A	N/A	N/A	80 to 3511	N/A	N/A
34	94	N/A	N/A	N/A	83 to 3675	N/A	N/A
35	95	N/A	N/A	N/A	87 to 3850	N/A	N/A
36	96	N/A	N/A	N/A	91 to 4025	N/A	N/A
37	97	N/A	N/A	N/A	94 to 4212	N/A	N/A
38	98	N/A	N/A	N/A	98 to 4398	N/A	N/A
39	99	N/A	N/A	N/A	103 to 4595	N/A	N/A
40	100	N/A	N/A	N/A	107 to 4792	N/A	N/A

Related helmet enchantments

The following helmet enchantments affect Herald of Thunder.

Related unique items

The following unique items are related to Herald of Thunder:

Related passive skills

The following passive skills are related to Herald of Thunder:

Alternate skill effects

Herald of Thunder has the following alternate skill effects:

Version history

Version	Changes
3.11.0	No longer has a 0.4 second cooldown on the storm repeatedly striking the same enemy. Now favours striking enemies that have been struck fewer times. Now deals 1 to 31 Lightning Damage at gem level 1 (from 1 to 34), up to 23 to 1108 Lightning Damage at gem level 20 (from 27 to 1303). Now has an added damage Effectiveness of 100% (from 120%).
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).
3.0.0	Added Herald gem tag.
2.0.0	Reduced added damage at all levels.
1.3.0	and Herald of Thunder have been changed from Spell to Cast active skill types to indicate that they deal secondary damage and not spell damage.
1.2.4	Herald of Thunder has been added to the game.