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Companion Efficiency Manual

From Diablo 4 Wiki

The Companion Efficiency Manual are pages of themed recipes of affixes that can be applied to Legendary and Rare items at the Blacksmith. They randomly drop in any Difficulty and are stored in your bag until you click to learn them at which point they will be stored in your Codex of Power.

Companion Efficiency
Legendary
Resource
  • 8.0 - 12.5% Companion Cooldown Reduction
  • 23.5 - 32.5% Wolves Cooldown Reduction
  • 10.5 - 15.0% Poison Creeper Cooldown Reduction
  • 15.5 - 20.0% Ravens Cooldown Reduction
Rings and Amulets.
Druid
Companion Efficiency
Magic
Resource
  • 5.5 - 7.5% Companion Cooldown Reduction
  • 18.5 - 27.5% Wolves Cooldown Reduction
  • 8.0 - 10.0% Poison Creeper Cooldown Reduction
  • 10.5 - 15.0% Ravens Cooldown Reduction
Rings and Amulets.
Druid
Companion Efficiency
Rare
Resource
  • 8.0 - 10.0% Companion Cooldown Reduction
  • 21.0 - 30.0% Wolves Cooldown Reduction
  • 8.0 - 12.5% Poison Creeper Cooldown Reduction
  • 13.0 - 17.5% Ravens Cooldown Reduction
Rings and Amulets.
Druid