Acquisition Drop restricted It can be obtained by engraving an Uncut Skill Gem.Metadata Item class: Skill Gem Metadata ID: Metadata/Items/Gem/SkillGemElementalWeakness
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
Heightened CurseHeightened CurseSupport, Curse Tier: 1 Cost & Reservation Multiplier: 140%Support Requirements: +5 IntSupports Curse Skills, magnifying their power.Supported Curses have 25% increased MagnitudesPlace 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.
Spell CascadeSpell CascadeSupport Tier: 1Support Requirements: +5 IntSupports Spells that affect an area around you or a target location, causing those Spells to also target additional areas on either side of the target area, along a randomly chosen axis. Cannot support Channelling skills or Remote skills.Supported Skills have 20% less Area of Effect Cascades from Supported Skills have 20% less Area of Effect Supported Skills deal 30% less Damage Supported Skills also affect Areas on either side of the targeted Area along a random axisPlace 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
Abiding HexAbiding HexSupport, Curse Tier: 2Support Requirements: +5 IntSupports Curse Skills you cast yourself. Supported Skills will consume Power Charges on use, gaining significant Curse duration if they do.Supported Skills consume a Power Charge on use Supported Skills have 80% more duration when consuming a Power ChargePlace 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.
Focused CurseFocused CurseSupport, Curse Tier: 2 Cost & Reservation Multiplier: 120%Support Requirements: +5 IntSupports Curse skills, causing them to Curse enemies more quickly after being cast.Curse zones from Supported Skills erupt after 50% less delayPlace 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
Cursed GroundCursed GroundSupport, Curse Tier: 3Support Requirements: +5 IntSupports Curse Skills. Supported Curse Skills create areas which Curse Enemies so long as they are within them.Supported Skills create Cursed Ground Enemies on the Cursed Ground from a Supported Skill are Cursed while within it Maximum 2 areas of Cursed GroundPlace 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.
Magnified Area IIMagnified Area IISupport, AoE Tier: 3 Cost & Reservation Multiplier: 130%Support Requirements: +5 IntSupports any skill with an area of effect, making it larger at the cost of damage.Supported Skills have 45% increased Area of Effect Supported Skills deal 10% less Area 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.
IV
Burning InscriptionBurning InscriptionSupport, AoE, Trigger, Fire Tier: 3 Cost & Reservation Multiplier: 110%Support Requirements: +5 IntSupports any Skill which creates Runic Inscriptions when Cast, causing those Runic Inscriptions to trigger Burning Inscription when they expire. Burning Inscription is a Spell which creates Ignited Ground based off of your Maximum Mana.Burning Inscription Create Ignited GroundIgniting Enemies based on a percentage of your Maximum Mana. Create Ignited Ground, Igniting enemies as though dealing Fire Damage equal to 20% of your Maximum Mana Ignited Ground radius is 2 metres Ignited Ground duration is 4 secondsPlace 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.
Rapid Casting IIRapid Casting IISupport, Spell Tier: 4Support Requirements: +5 IntSupports Spells, causing them to cast faster.Supported Skills have 20% increased Cast SpeedPlace 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
Cold MasteryCold MasterySupport, Cold Tier: 5Support Requirements: +5 IntSupports Cold skills, granting them an additional level. Does not support skills which do not have levels.+1 to Level of Supported Cold 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.
Fire MasteryFire MasterySupport, Fire Tier: 5Support Requirements: +5 IntSupports Fire skills, granting them an additional level. Does not support skills which do not have levels.+1 to Level of Supported Fire 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
Elemental Weakness has restrictions on where or how it can drop.