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Weapon Mastery Efficiency Manual

From Diablo 4 Wiki

The Weapon Mastery 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 World Tiers 1 to 4 and are stored in your bag until you click to learn them at which point they will be stored in your Codex of Power.

Weapon Mastery Efficiency
Legendary
Resource
  • 8.0 - 12.5% Weapon Mastery Cooldown Reduction
  • 10.5 - 15.0% Death Blow Cooldown Reduction
  • 10.5 - 15.0% Rupture Cooldown Reduction
  • 15.5 - 20.0% Steel Grasp Cooldown Reduction
Rings and Amulets.
Barbarian
Weapon Mastery Efficiency
Rare
Resource
  • 8.0 - 10.0% Weapon Mastery Cooldown Reduction
  • 8.0 - 12.5% Death Blow Cooldown Reduction
  • 8.0 - 12.5% Rupture Cooldown Reduction
  • 13.0 - 17.5% Steel Grasp Cooldown Reduction
Rings and Amulets.
Barbarian
Weapon Mastery Efficiency
Magic
Resource
  • 5.5 - 7.5% Weapon Mastery Cooldown Reduction
  • 8.0 - 10.0% Death Blow Cooldown Reduction
  • 8.0 - 10.0% Rupture Cooldown Reduction
  • 10.5 - 15.0% Steel Grasp Cooldown Reduction
Rings and Amulets.
Barbarian