Arcane

Arcane is a gem tag. This tag applies to skills and support gems which scale in some way based on the amount of mana you have, or the amount of mana you spend.

Gems

Skill gems

There are 6 skill gems with the Arcane gem tag:

Gem
Bladefall of TrarthusBladefall of TrarthusSpell, AoE, Physical, Arcane, Duration Level: (1-20) Cost: 5% Mana per second Cooldown Time: 0.30 sec Can Store 1 Use(s) Cast Time: Instant Critical Strike Chance: 10.00% Effectiveness of Added Damage: 120%Requires Level 28Once activated, continuously spends mana to cause volleys of ethereal weapons rain from the sky around you, dealing damage to enemies they impact. Each Blade will target a separate enemy in the volley area if possible. Each enemy can only be hit once by each volley, even if multiple blades land near them. This skill cannot be triggered or used by Totems, Traps, or Mines.Deals (39-536) to (59-803) Physical Damage Base duration is 6.00 seconds A Volley of blades falls every 0.7 seconds 2% increased Volley frequency per 100 maximum Mana Base Volley radius is 2.5 metres Base Blade radius is 1 metre 5 Blades fall per Volley, which will then Linger in the ground Maximum 40 Lingering Blades can be left in the ground at a time Additional Effects From 1-20% Quality: Base radius is (0.015-0.3) metresPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	28
Arcane CloakArcane CloakSpell, Duration, Guard, Lightning, Arcane Level: (1-20) Cooldown Time: 4.00 sec Can Store 1 Use(s) Cast Time: InstantRequires Level 16Spends a portion of your mana to grant a buff that takes some of the damage from hits for you until depleted. The buff grants added lightning damage based on the amount of mana spent by this skill. Shares a cooldown with other Guard skills.Base duration is 3.00 seconds Spends (45-64)% of current Mana 75% of Damage from Hits is taken from Buff before your Life or Energy Shield Buff can take Damage equal to Mana Spent by this Skill's effect Buff grants Added Lightning Damage equal to (10-14)% of Mana Spent by this Skill's effect This Skill's Cooldown does not recover during its effect Additional Effects From 1-20% Quality: (1-20)% increased Buff EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	16
ManabondManabondSpell, AoE, Lightning, Arcane Level: (1-20) Cost: 5% Mana Cast Time: 0.80 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 160%Requires Level 12Deals lightning damage based upon your missing mana in a circular area around the targeted location, as well as in four rectangular extensions whose lengths depend upon your remaining mana.Deals (7-263) to (39-1488) Lightning Damage Deals base Lightning Damage equal to (25-44)% of missing Unreserved Mana +6 to length per 25% of Unreserved maximum Mana you have Additional Effects From 1-20% Quality: Deals base Lightning Damage equal to +(0.5-10)% of missing Unreserved ManaPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	12
Sigil of PowerSigil of PowerSpell, AoE, Duration, Lightning, Arcane Level: (1-20) Cost: (30-54) Mana Cooldown Time: 10.00 sec Can Store 1 Use(s) Cast Time: 0.50 secRequires Level 34Places a Sigil on the ground, which grants a buff to you and allies in the area around it for a duration. The Sigil gains stages as you spend mana in its area, making the buff more powerful. You can only have one Sigil of Power at a time.Base duration is 12.00 seconds Gains a Stage when you Spend a total of (72-400) Mana while in Area Enemies in Area deal (10-19)% less Damage while at maximum Stages Maximum 4 Stages Buff grants (2-7) to (29-141) Added Lightning Damage per Stage Minimum 1 second between Stages Additional Effects From 1-20% Quality: Enemies in Area deal +(0.2-4)% less damage while at maximum StagesPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	34
StormbindStormbindSpell, AoE, Channelling, Lightning, Duration, Arcane Level: (1-20) Cost: (3-5) Mana Cast Time: 0.12 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 160%Requires Level 28Channel to spread runes on the ground in a growing pattern. The runes fade away after a duration, or will be immediately removed and deal damage in a circular area when detonated by Rune Blast. Enemies standing on the runes are Hindered, reducing their movement speed.Deals (36-444) to (107-1332) Lightning Damage Base duration is 12.00 seconds 50% reduced Movement Speed Runes have 30% more Area of Effect per Improvement Runes deal 100% more Damage with Hits and Ailments per Improvement A Rune is Improved for each (5-24) Mana Spent Runes can be improved 3 times Additional Effects From 1-20% Quality: Runes have +(0.5-10)% more Area of Effect per Improvement (0.5-10)% increased Cast SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	28
Stormbind of TeleportationStormbind of TeleportationSpell, AoE, Channelling, Lightning, Duration, Arcane, Movement, Travel, Blink Level: (1-20) Cost: (3-5) Mana Cast Time: 0.12 sec Critical Strike Chance: 6.00% Effectiveness of Added Damage: 160%Requires Level 28Channel to spread runes on the ground in a growing pattern. The runes fade away after a duration, or will be immediately removed and deal damage in a circular area when detonated by Rune Blast. Enemies standing on the runes are Hindered, reducing their movement speed.Deals (36-444) to (107-1332) Lightning Damage Base duration is 12.00 seconds 50% reduced Movement Speed Runes have 30% more Area of Effect per Improvement Runes deal 100% more Damage with Hits and Ailments per Improvement A Rune is Improved for each (5-24) Mana Spent Runes can be improved 3 times Teleport to the detonated Rune if you have not detonated Runes in the past 1 second Additional Effects From 1-20% Quality: Runes have +(0.5-10)% more Area of Effect per Improvement (0.5-10)% increased Cast SpeedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	28

Support gems

There are 2 support gems with the Arcane gem tag:

Gem
Arcane Surge SupportArcane Surge SupportArcane, Support, Spell, Duration Icon: N Level: (1-20) Cost & Reservation Multiplier: 130%Each supported spell will track how much mana you spend on it, granting a buff when the total mana spent reaches a threshold. Cannot support skills used by totems, traps, mines or skills with a reservation.Gain Arcane Surge after Spending a total of (15-400) Mana on Upfront Costs and Effects of a Supported Skill Arcane Surge grants 20% increased Cast Speed Arcane Surge grants 30% increased Mana Regeneration rate Arcane Surge lasts 4 seconds Supported Skills deal (14-35)% more Spell Damage while you have Arcane Surge Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Spell DamageThis 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 Skill Gem you wish to augment. Right click to remove from a socket.	1
Archmage SupportArchmage SupportLightning, Arcane, Support, Spell Icon: ^ Level: (1-20)Requires Level 31Supports spell skills that deal damage with hits and have no reservation. Cannot support arcane skills, Brand skills, Orb skills, Vaal skills, or skills used by totems, traps or mines. Cannot modify the skills of minions.Supported Skills gain Added Lightning Damage equal to (10-16)% of Unreserved Maximum Mana Supported Skills gain Base Mana Cost equal to 5% of Unreserved Maximum Mana Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Spell DamageThis 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 Skill Gem you wish to augment. Right click to remove from a socket.	31

Version history

Version	Changes
3.15.0	Introduced to the game as a gem tag.