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
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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.
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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.
Elemental Discharge Cooldown Time:1.00s Cast Time:1.00s Critical Hit Chance:10.00% Consuming Freeze deals 80% to 120% of your Intelligence as Cold Damage Consuming Ignite deals 40% to 60% of your Intelligence as Fire Damage Consuming Shock deals 1% to 120% of your Intelligence as Lightning Damage Discharge 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.
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.
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.
IV
V
Item acquisition
Orb of Storms has restrictions on where or how it can drop.