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
Exploit WeaknessExploit WeaknessSupport, Payoff Category: Exploit Weakness Tier: 2 Cost & Reservation Multiplier: 130%Support Requirements: +5 StrSupports any skill that Hits enemies, causing them to deal more Damage against enemies with Broken Armour but preventing them from Breaking Armour themselves. Cannot support skills that ConsumeBroken Armour.Supported Skills cannot Break Armour Supported Skills Consume Enemy Fully Broken Armour to deal 40% 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.
Inevitable CriticalInevitable CriticalSupport Category: Inevitable Critical Tier: 3 Cost & Reservation Multiplier: 120%Support Requirements: +5 IntSupports any skill you use yourself that Hits enemies, causing it to accumulate Critical Hit chance over time.Supported Skills gain 25% increased Critical Hit Chance each second, up to 200%. This Critical Hit Chance is lost whenever a skill supported by Inevitable Critical Critically 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.
Cooldown Recovery ICooldown Recovery ISupport Category: Cooldown Recovery Tier: 3 Cost & Reservation Multiplier: 130%Support Requirements: +5 DexSupports skills with Cooldowns, increasing the rate at which those Cooldowns Recover. Cannot modify the skills of minions.Supported Skills have 25% increased cooldown recovery ratePlace 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
HeftHeftSupport, Physical Category: Heft Tier: 5 Cost & Reservation Multiplier: 120%Support Requirements: +5 StrSupports Skills which deal Damage, increasing the maximum Physical Damage of their Hits.Supported Skills deal 30% more Maximum PhysicalHit 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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TremorsTremorsSupport, Attack, Melee, Slam Category: TremorsSupport Requirements: +5 StrSupports Slam Skills you use yourself. Supported Skills gain multiple independent chances to cause Aftershocks, but deal less Damage.Supported Skills have 30% chance to cause an additional Aftershock Supported Skills have 15% chance to cause two additional Aftershocks Supported Skills have 10% chance to cause three additional Aftershocks Supported Skills deal 35% less 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
V
Item acquisition
Hammer of the Gods has restrictions on where or how it can drop.