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Diablo 4 (D4)

How to Get Efficiency Support (Tuning Stone)

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Efficiency Support is a Tuning Stone in Diablo 4 (D4). Learn the effects of Efficiency Support, how to get it, and how to use it!

List of Contents

Efficiency Support Effects

Efficiency SupportEfficiency Support
Tier B-Tier
Type Tuning Stone
Rarity Rare
Used For Ranged, Melee
Effect When the supporting skill deals damage, you gain Critical Strike Chance to the same targets hit.

How to Get Efficiency Support

Obtained From Vaults

Efficiency Support can looted from Vault runs in Kehjistan. Completed Vault runs reward at least one random tuning stone. Additional tuning stones are available if players can open Wardwoven Chests via Zoltun's Warding vault buff.

Crafted From Shattered Stones

Efficiency Support can be crafted using Shattered Stones looted from constructs inside Vault runs. Simply head to the Jeweller in any city hub with enough Shattered Stones to craft this Tuning Stone.

Obtained From Arcane Tremors

Efficiency Support can be drop from enemies during Arcane Tremors across Sanctuary. Take note that these generally have low drop rates.

Chance to Drop from Season Journey Caches

D4 Season 3 - Season Journey Reward Cache
Efficiency Support has a chance to drop when opening Season 3 Journey Reward Caches. These can be acquired by completing the required number of challenges per chapter of the Seasonal Journey.

How to Use Efficiency Support

Link to a Governing Stone

Efficiency Support is a Tuning Stone and must be attached to a Governing Stone to function. Link it to one an equipped governing stone from your Seneschal Companion. Take note that one Governing Stone can be linked to three Tuning Stones at any time.

Diablo 4 Related Guides

Diablo 4 - Tuning Stones
All Tuning Stones

Arcing SupportArcing Support Bleeding SupportBleeding Support Breaking SupportBreaking Support
Burning SupportBurning Support Devastation SupportDevastation Support Duration SupportDuration Support
Dusk SupportDusk Support Efficiency SupportEfficiency Support Electrocution SupportElectrocution Support
EvernightEvernight Fortify SupportFortify Support Frigid SupportFrigid Support
GenesisGenesis Gripping SupportGripping Support Initiative SupportInitiative Support
Mockery SupportMockery Support Multishot SupportMultishot Support Piercing SupportPiercing Support
Poison SupportPoison Support Registered Damage SupportRegistered Damage Support Resource SupportResource Support
Safeguard SupportSafeguard Support Seeking SupportSeeking Support Slowing SupportSlowing Support
Swift SupportSwift Support Tactical SupportTactical Support Voluminous SupportVoluminous Support

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