Arc of Surging

Arc of SurgingSpell, Lightning
Level: (1-20)
Cost: (8-23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 230%Requires Level 12An arc of lightning reaches from the caster to a targeted enemy and splits to simultaneously hit several other enemies.Deals (11-381) to (62-2159) Lightning Damage
Beam Splits towards (4-7) additional targets
Modifiers to the number of times to Chain instead apply
to the number of targets Beam Splits towards

Additional Effects From 1-20% Quality:
Beam Splits towards (0.1-2) additional targetsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

Acquisition
Drop restricted
Drop level: 12
This item is a transfigured gem. It can be obtained through the use of the Divine Font in the Lord's Labyrinth.Vendor Offer
1x Scroll FragmentMetadata
Item class: Skill Gem

Arc of Surging is a lightning spell that creates a pulse of electricity that splits towards nearby targets after hitting a target.

It is a transfigured version of ArcArcSpell, Chaining, Lightning
Level: (1-20)
Cost: (8-23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 120%Requires Level 12An arc of lightning reaches from the caster to a targeted enemy and chains to other enemies, but not immediately back. Each time the arc chains, it will also chain a secondary arc to another enemy that the main arc has not already hit, which cannot chain further.Deals (6-198) to (32-1122) Lightning Damage
Chains +(4-7) Times
15% more Damage with Hits and Ailments for each remaining Chain

Additional Effects From 1-20% Quality:
Chains +(0.05-1) TimesPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket..

Changes from default version

Unlike the original skill, this transfigured version does not chain but instead splits towards multiple nearby targets after hitting an initial target. It also has higher base damage and damage effectiveness but loses the multiplier for remaining chains.

Gem level progression

Level			Mana Cost	Lightning Damage	# Split targets	Exp.	Total Exp.
1	12	33	8	11 to 62	4	0	0
2	15	39	9	14 to 80	4	15249	15249
3	19	48	10	19 to 108	4	41517	56766
4	23	56	11	25 to 144	4	81983	138749
5	27	64	12	33 to 188	4	147968	286717
6	31	73	13	43 to 244	5	250557	537274
7	35	81	14	55 to 312	5	405086	942360
8	38	88	15	66 to 374	5	447718	1390078
9	41	94	16	79 to 447	5	615318	2005396
10	44	100	16	94 to 531	5	834639	2840035
11	47	106	17	111 to 630	6	1570760	4410795
12	50	113	18	132 to 745	6	1633987	6044782
13	53	119	19	155 to 879	6	2151030	8195812
14	56	125	19	183 to 1035	6	2812189	11008001
15	59	132	20	214 to 1215	6	5099360	16107361
16	62	138	21	251 to 1425	7	9400731	25508092
17	64	142	21	279 to 1582	7	15273366	40781458
18	66	146	22	310 to 1756	7	26286582	67068040
19	68	151	22	344 to 1948	7	62890590	129958630
20	70	155	23	381 to 2159	7	212046017	342004647
21	72	159	24	422 to 2391	8	N/A	N/A
22	74	N/A	24	467 to 2647	8	N/A	N/A
23	76	N/A	25	517 to 2928	8	N/A	N/A
24	78	N/A	25	571 to 3238	8	N/A	N/A
25	80	N/A	26	631 to 3578	8	N/A	N/A
26	82	N/A	26	698 to 3953	9	N/A	N/A
27	84	N/A	27	770 to 4364	9	N/A	N/A
28	86	N/A	27	850 to 4816	9	N/A	N/A
29	88	N/A	28	938 to 5313	9	N/A	N/A
30	90	N/A	28	1034 to 5859	9	N/A	N/A
31	91	N/A	28	1085 to 6151	10	N/A	N/A
32	92	N/A	29	1140 to 6457	10	N/A	N/A
33	93	N/A	29	1196 to 6778	10	N/A	N/A
34	94	N/A	29	1256 to 7115	10	N/A	N/A
35	95	N/A	29	1318 to 7467	10	N/A	N/A
36	96	N/A	30	1383 to 7836	11	N/A	N/A
37	97	N/A	30	1451 to 8223	11	N/A	N/A
38	98	N/A	30	1522 to 8627	11	N/A	N/A
39	99	N/A	30	1597 to 9051	11	N/A	N/A
40	100	N/A	31	1676 to 9495	11	N/A	N/A

Gem quality

Type	Additional Effects per 1-20% Quality	Weight
Superior	Beam Splits towards (0.1-2) additional targets	1

Item acquisition

Arc of Surging has restrictions on where or how it can drop. This item is a transfigured gem. It can be obtained through the use of the Divine Font in the Lord's Labyrinth.

Recipes

Arc of Surging can be created from the following recipes:

Amount	Part	Description	Meta
4	The Blessing of MooshThe Blessing of Moosh4Level 21 Transfigured Gem CorruptedWhile the Labyrinth traps have claimed countless adventurers, they were not designed with felines in mind.	Random corrupted level 21 transfigured gem	A
8	The HookThe Hook8Level 21 Transfigured Gem Quality: +23% CorruptedEvery obsession began with a single, innocent taste.	Random corrupted level 21 transfigured gem with 23% quality	A
3	Doryani's EpiphanyDoryani's Epiphany3Level 21 Transfigured Gem Quality: +20% Corrupted"Virtue gems have facets beyond those that can be seen by the mortal eye. Let us look deeper..."	Random corrupted level 21 transfigured gem with 20% quality	A
8	Dying AnguishDying Anguish8Level 19 Transfigured Gem Quality: +19%Moribund, he gazed upon the journey taken as blood trickled down his chin. His eye closed on the city ahead that he would never call home.	level 19 transfigured gem with 19% quality	A
1	The VoidThe Void1Reach into the Void and claim your prize.	Random divination card set exchange	A

Related helmet enchantments

The following helmet enchantments affect Arc.

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 Arc Damage 1	66	Merciless Labyrinth	25% increased Arc Damage	helmet 100
Enchantment Arc Damage 2	75	Eternal Labyrinth	40% increased Arc Damage	helmet 75
Enchantment Arc Damage Per Chain 1	66	Merciless Labyrinth	Arc deals 8% increased Damage for each time it has Chained	helmet 100
Enchantment Arc Damage Per Chain 2	75	Eternal Labyrinth	Arc deals 12% increased Damage for each time it has Chained	helmet 75
EnchantmentArcNumOfAdditionalProjectilesInChain1	66	Merciless Labyrinth	Arc Chains an additional time	helmet 0
Enchantment Arc Num Of Additional Projectiles In Chain 1	75	Eternal Labyrinth	Arc Chains an additional time	helmet 75
Enchantment Arc Shock Chance 1	66	Merciless Labyrinth	Arc has +20% chance to Shock	helmet 100
Enchantment Arc Shock Chance 2	75	Eternal Labyrinth	Arc has +30% chance to Shock	helmet 75

Alternate skill effects

Arc of Surging has the following alternate skill effects:

Item	Effect(s)
Automaton Arc EffectAutomaton Arc EffectSkill Gem EffectYour Arc becomes an Automaton Effect.	Your Arc becomes an Automaton Effect.
Celestial Arc EffectCelestial Arc EffectSkill Gem EffectYour Arc becomes a Celestial Effect.	Your Arc becomes a Celestial Effect.
Purple ArcPurple ArcSkill Gem EffectYour Arc becomes a Purple Effect.	Your Arc becomes a Purple Effect.
Radiant Arc EffectRadiant Arc EffectSkill Gem EffectYour Arc becomes a Radiant Effect.	Your Arc becomes a Radiant Effect.

Version history

Version	Changes
3.24.0	Fixed a bug where the split beams from Arc of Surging could target the same enemy.
3.23.0	Added to the game. Renamed from Arc of Branching to Arc of Surging prior to release. [Undocumented This change was not documented by any official sources. It was discovered through player testing or datamining.]