Warrior talent · row 3 of Protection, from level 20 (15 with Talented 5/5) · Physical

Master of Defense

Grants you a 50/100% chance to generate 5 Rage when you Dodge or Parry while a shield is equipped.

Game files · build 1.60.1.70245New in ForeverRead from the WoW Forever beta client, build 1.60.1.70245.

In Blizzard's notes

What Blizzard said about Master of Defense, each line checked against the files.

Matches the files
Master of Defense: New row 3 talent. Requires Shield Specializaton. Grants a chance to gain 5 Rage when the Warrior Dodges or Parries while a shield is equipped.
The files Protection row 3, behind Shield Specialization (talent edge 124810). The tooltip gives a 50/100% chance for 5 Rage on a dodge or parry with a shield.
Master of Defense Class deep dives: Priest and Warrior

69876 Sep 16First beta build we archived. No changes in the client files since.