Armour Mastery (Advanced)
List: Martial Guilds.
Tier: 4
OSP Cost: 40
Pre-requisite to learn: Armour Mastery.
Requirements to use: Any Armour Use CS.
Dependent skill: Armour Mastery (Expert).
This skill replaces Armour Mastery and increases the AV of any armour worn by +2, subject to the rule of double.