Orb of StormsSpell, AoE, Sustained, Lightning, Duration, Chaining, Orb Tier: 3 Level: 1 Reservation: 1 SpiritCreates an Orb of electricity that fires ChainingLightning bolts at nearby enemies.Deals 22 to 65 Lightning Damage Chains 4 times Fires a bolt every 2.85 seconds, and when you use a Lightning Skill near the Orb Orb disappears after 23 bolts Orb radius is 2.8 metres Orb duration is 10 seconds Limit 1 Orb of StormsPlace into a Skill Gem socket to gain this skill. Sockets are found in the Skills menu tab.
Acquisition Drop restricted It can be obtained by engraving an Uncut Skill Gem.Metadata Item class: Skill Gem Metadata ID: Metadata/Items/Gems/SkillGemOrbOfStorms
The following support gems are recommendations by GGG as listed in-game, and do not necessarily reflect optimal combinations or the views of the wiki.
Gem tier
Support gems
I
Chain IChain ISupport, Projectile, Chaining Category: Chain Tier: 1Support Requirements: +5 DexSupports Projectile skills and any other skills that Chain, causing them to Chain additional times.Supported Skills Chain +1 times Supported Skills Chain 100% more times Supported Skills deal 50% less Damage with HitsPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Overabundance IOverabundance ISupport Category: Overabundance Tier: 1Support Requirements: +5 DexSupports skills which can have a Limited number of effects active at once, increasing that Limit at the cost of their duration. Only applies to restrictions that use the word "Limit".Supported Skills have +1 to Limit Supported Skills have 50% less Skill Effect DurationPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Prolonged Duration IProlonged Duration ISupport, Duration Category: Prolonged Duration Tier: 1 Cost & Reservation Multiplier: 120%Support Requirements: +5 StrSupports any skill that has a duration, making that duration longer.Supported Skills have 30% more Skill Effect DurationPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
II
Considered CastingConsidered CastingSupport, Spell Category: Considered Casting Tier: 2 Cost & Reservation Multiplier: 115%Support Requirements: +5 IntSupports Spell Skills that Hit Enemies and you cast yourself, boosting Damage at the cost of Cast Speed.Supported Spell Skills have 15% less Cast Speed Supported Spells deal 35% more DamagePlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Mana Flare Cooldown Time:1.00s Cast Time:1.00s Critical Hit Chance:7.00% Consumes 25% of current Mana to deal that much Fire damage Flare radius is 2 metresPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple copies of the same Support Gem socketed at the same time.
Shock ConductionShock ConductionSupport, AoE, Lightning Category: Shock Conduction Tier: 2 Cost & Reservation Multiplier: 120%Support Requirements: +5 IntSupports any skill that Hits enemies, giving it a chance to also Shock nearby enemies when you Shock an enemy.ShockingHits from supported Skills have a 50% chance to also Shock enemies in a 2.5 metre radiusPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
III
Harmonic Remnants IIHarmonic Remnants IISupport, Remnant Category: Harmonic Remnants Tier: 3Support Requirements: +5 IntSupports Skills which create Remnants, allowing those Remnants to be collected from further away, with a chance to create an additional Remnant.20% chance for Supported Skills to create an additional Remnant Remnants created by Supported Skills can be collected from 100% further awayPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Neural OverloadNeural OverloadSupport, Lightning Category: Electrocute Tier: 3Support Requirements: +5 DexSupports any skill that Hits enemies. Nearby enemies are marked when they are Primed for Electrocution, and hitting a marked enemy with a supported skill will Electrocute them.Supported Skills ElectrocutePrimed enemies on HitPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Zenith IIZenith IISupport, Spell Category: Zenith Tier: 3 Cost & Reservation Multiplier: 120%Support Requirements: +5 IntSupports Spell Skills. Supported Skills deal more damage while you are above 90% of your Maximum Mana, and Recoup a portion of Skill costs as Mana. Does not modify Skills used by Minions.25% of Supported Skills costs are Recouped as Mana Supported Spells deal 30% more Damage while you are above 90% of your Maximum ManaPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
IV
Lightning ExposureLightning ExposureSupport, Lightning, Duration Category: Lightning Exposure Tier: 4 Cost & Reservation Multiplier: 120%Support Requirements: +5 DexSupports any skill that Hits enemies, causing it to inflict Exposure when inflicting Shock.Supported Skills inflict Exposure for 8 seconds on Shocking a targetPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Overabundance IIOverabundance IISupport Category: Overabundance Tier: 4Support Requirements: +5 DexSupports skills which can have a Limited number of effects active at once, increasing that Limit at the cost of their duration. Only applies to restrictions that use the word "Limit".Supported Skills have +1 to Limit Supported Skills have 40% less Skill Effect DurationPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
V
Chain IIIChain IIISupport, Projectile, Chaining Category: Chain Tier: 5Support Requirements: +5 DexSupports Projectile skills and any other skills that Chain, causing them to Chain additional times.Supported Skills Chain 200% more times Supported Skills deal 40% less Damage with HitsPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Lightning MasteryLightning MasterySupport, Lightning Category: Mastery Tier: 5Support Requirements: +5 IntSupports Lightning skills, granting them an additional level. Does not support skills which do not have levels.+1 to Level of Supported Lightning SkillsPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
Item acquisition
Orb of Storms has restrictions on where or how it can drop.
The base damage scaling of all player spell and secondary damage skills has been tweaked to scale better in the late game.
Orb of Storms: Now triggers from casting any spell in its radius (previously only lightning spells, but incorrectly described as all lightning skills). It now creates a Lightning Infusion Remnant if all of its bolts are used up or its duration expires. It now has a maximum of 6 bolts at all Gem levels (previously 12–29 at Gem levels 3–20). It now has a base radius of 3.6 metres (previously 2.8 metres). It now deals 1–15 damage at gem level 3 (previously 4–12), scaling up to 14–260 damage at gem level 20 (previously 63–190). Now fires a bolt every 4 seconds, and when you use a Lightning Skill near the Orb (previously every 3.4-2.55 seconds at Gem levels 3-20). Orb duration is now 12 seconds (previously 10).
Many Skills have had their base damage and/or damage growth per level rebalanced. Most of these changes are not specifically mentioned below as the changes are too widespread.