Arc
ArcSpell, Chaining, Lightning
Level: (1-20)
Cost: (8-23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: 120%Requires Level 12An arc of lightning stretches from the caster to a targeted enemy and chains on to other nearby enemies. Each time the main beam chains it will also chain to a second enemy, but that secondary arc cannot chain further.Deals (6-198) to (32-1122) Lightning Damage
10% chance to Shock enemies
Chains +(4-7) Times
15% more Damage for each remaining Chain
(10-29)% increased Effect of Lightning Ailments
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.Acquisition
Drop level: 12Vendor Offer
1x Scroll FragmentMetadata
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemArc
Arc is a lightning spell that creates a chaining pulse of electricity.
Skill functions and interactions
- Chain: Arc deals 15% more damage per remaining chain. Arc gains base chains from gem level, and additional sources of chain such as
Chain SupportChain SupportSupport, Chaining, Projectile
Icon: c
Level: (1-20)
Cost & Reservation Multiplier: 150%Requires Level 38Supports projectile skills, and any other skills that chain.Supported Skills Chain +2 times
Supported Skills deal (30-11)% less Damage with Hits
Additional Effects per 1% Quality:
Supported Skills have 0.5% increased Chaining rangeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.are also taken into account for this bonus.
- Every time Arc chains, a secondary Arc is created that hits an additional nearby enemy. This secondary Arc cannot chain further.
- Arc remembers the last two enemies hit by the main Arc, and will not hit these enemies again. This means at least 3 enemies are required before the main Arc can hit the same enemy twice.
Gem level progression
Level | ![]() | ![]() | Mana Cost | Lightning Damage | Chains | Lightning Ailment Effect | Exp. | Total Exp. |
---|---|---|---|---|---|---|---|---|
1 | 12 | 33 | 8 | 6 to 32 | +4 | 10% | 0 | 0 |
2 | 15 | 39 | 9 | 7 to 41 | +4 | 11% | 15249 | 15249 |
3 | 19 | 48 | 10 | 10 to 56 | +4 | 12% | 41517 | 56766 |
4 | 23 | 56 | 11 | 13 to 75 | +4 | 13% | 81983 | 138749 |
5 | 27 | 64 | 12 | 17 to 98 | +4 | 14% | 147968 | 286717 |
6 | 31 | 73 | 13 | 22 to 127 | +5 | 15% | 250557 | 537274 |
7 | 35 | 81 | 14 | 29 to 162 | +5 | 16% | 405086 | 942360 |
8 | 38 | 88 | 15 | 34 to 194 | +5 | 17% | 447718 | 1390078 |
9 | 41 | 94 | 16 | 41 to 232 | +5 | 18% | 615318 | 2005396 |
10 | 44 | 100 | 16 | 49 to 276 | +5 | 19% | 834639 | 2840035 |
11 | 47 | 106 | 17 | 58 to 327 | +6 | 20% | 1570760 | 4410795 |
12 | 50 | 113 | 18 | 68 to 387 | +6 | 21% | 1633987 | 6044782 |
13 | 53 | 119 | 19 | 81 to 457 | +6 | 22% | 2151030 | 8195812 |
14 | 56 | 125 | 19 | 95 to 538 | +6 | 23% | 2812189 | 11008001 |
15 | 59 | 132 | 20 | 111 to 631 | +6 | 24% | 5099360 | 16107361 |
16 | 62 | 138 | 21 | 131 to 740 | +7 | 25% | 9400731 | 25508092 |
17 | 64 | 142 | 21 | 145 to 822 | +7 | 26% | 15273366 | 40781458 |
18 | 66 | 146 | 22 | 161 to 912 | +7 | 27% | 26286582 | 67068040 |
19 | 68 | 151 | 22 | 179 to 1012 | +7 | 28% | 62890590 | 129958630 |
20 | 70 | 155 | 23 | 198 to 1122 | +7 | 29% | 212046017 | 342004647 |
21 | 72 | 159 | 24 | 219 to 1242 | +8 | 30% | N/A | N/A |
22 | 74 | N/A | 24 | 243 to 1375 | +8 | 31% | N/A | N/A |
23 | 76 | N/A | 25 | 269 to 1522 | +8 | 32% | N/A | N/A |
24 | 78 | N/A | 25 | 297 to 1683 | +8 | 33% | N/A | N/A |
25 | 80 | N/A | 26 | 328 to 1859 | +8 | 34% | N/A | N/A |
26 | 82 | N/A | 26 | 362 to 2054 | +9 | 35% | N/A | N/A |
27 | 84 | N/A | 27 | 400 to 2268 | +9 | 36% | N/A | N/A |
28 | 86 | N/A | 27 | 442 to 2503 | +9 | 37% | N/A | N/A |
29 | 88 | N/A | 28 | 487 to 2761 | +9 | 38% | N/A | N/A |
30 | 90 | N/A | 28 | 537 to 3044 | +9 | 39% | N/A | N/A |
31 | 91 | N/A | 28 | 564 to 3196 | +10 | 39% | N/A | N/A |
32 | 92 | N/A | 29 | 592 to 3356 | +10 | 40% | N/A | N/A |
33 | 93 | N/A | 29 | 622 to 3522 | +10 | 40% | N/A | N/A |
34 | 94 | N/A | 29 | 652 to 3697 | +10 | 41% | N/A | N/A |
35 | 95 | N/A | 29 | 685 to 3880 | +10 | 41% | N/A | N/A |
36 | 96 | N/A | 30 | 719 to 4072 | +11 | 42% | N/A | N/A |
37 | 97 | N/A | 30 | 754 to 4273 | +11 | 42% | N/A | N/A |
38 | 98 | N/A | 30 | 791 to 4483 | +11 | 43% | N/A | N/A |
39 | 99 | N/A | 30 | 830 to 4703 | +11 | 43% | N/A | N/A |
40 | 100 | N/A | 31 | 871 to 4934 | +11 | 44% | N/A | N/A |
Gem quality
Type | Stats (per 1% quality) | Weight |
---|---|---|
Superior | 0.5% chance to Shock enemies | 50 |
Anomalous | 1% increased Chaining range | 100 |
Divergent | 0.5% increased Damage for each time this Skill has Chained | 50 |
Phantasmal | 1% reduced Enemy Stun Threshold | 20 |
Item acquisition
Arc can drop anywhere.
Recipes
Arc can be created from the following recipes:
Amount | Part | Description | Meta |
---|---|---|---|
13 | ![]() ![]() ![]() CorruptedThe mighty warriors traded in blows, the nimble archers in arrows, yet it was the brazen thaumaturgists who would bring catastrophe to all. ![]() | Random corrupted level 21 Spell gem | A |
6 | ![]() ![]() ![]() - Ezomyte Proverb ![]() | Random level 20 gem | A |
8 | ![]() ![]() ![]() Alternate 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. ![]() | Random level 19 gem with 19% alternative quality | A |
8 | ![]() ![]() ![]() Alternate Quality: +23% CorruptedEvery obsession began with a single, innocent taste. ![]() | Random corrupted level 21 gem with 23% alternative quality | A |
3 | ![]() ![]() ![]() Quality: +20%"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter ![]() | Random gem with 20% quality | A |
1 | ![]() Item drops after killing {0} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters. Shift click to unstack. ![]() | Random gem with 1–20% quality | A |
1 | ![]() ![]() ![]() ![]() | Random divination card set exchange | A |
Quest reward
This item is given as a quest reward for the following quests:
Class → | Witch | Shadow | Ranger | Duelist | Marauder | Templar | Scion |
---|---|---|---|---|---|---|---|
Quest ↓ | |||||||
The Siren's Cadence Act 1 | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
Vendor reward
This item can be bought at the listed NPC vendors, after completing the following quests:
Class → | Witch | Shadow | Ranger | Duelist | Marauder | Templar | Scion |
---|---|---|---|---|---|---|---|
Quest ↓ | |||||||
The Siren's Cadence Act 1 Nessa | ✓ | ✓ | ✗ | ✗ | ✗ | ✓ | ✗ |
A Fixture of Fate Act 3 Siosa | ✓ | ||||||
Fallen from Grace Act 6 Lilly Roth | ✓ |
Related helmet enchantments
The following helmet enchantments affect Arc.
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 |
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 has the following alternate skill effects:
Item | Effect(s) |
---|---|
Automaton Arc Effect![]() ![]() | Your Arc becomes an Automaton Effect. |
Celestial Arc Effect![]() ![]() | Your Arc becomes a Celestial Effect. |
Purple Arc![]() ![]() | Your Arc becomes a Purple Effect. |
Radiant Arc Effect![]() ![]() | Your Arc becomes a Radiant Effect. |
Version history
Version | Changes |
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3.17.0 |
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3.11.0 |
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3.9.0 |
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3.6.2 |
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3.6.0 |
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3.3.0 |
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3.0.0 |
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2.1.0 |
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2.0.0 |
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1.3.1 |
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1.2.0 |
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1.1.2 |
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1.0.0 |
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0.11.1 |
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0.9.13 |
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