Heavy Armour Master is a Passive Feature provided by the Feat of the same name. Your mastery over heavy armour increases, granting you damage reduction of incoming non-magical damage by 3.
Description
Your Strength increases by 1, to a maximum of 20.
Incoming damage from non-magical attacks also decreases by 3 while you're wearing heavy armour.
Requires Proficiency with Heavy Armour
How to learn
Granted by feats: Heavily Armoured