Vanguard
The Defender gains bonus Armor and Magic Resist for each enemy around him.
The Defender gains Value unavailable bonus Armor and Resist for each enemy or friend(up to 6) in the Value unavailable meters radius around the Defender.
Additionally for each stack Defender gains Value unavailable = [(2.5%) for every 1000 Max Health] aggro generation and Value unavailable = [(0.8%) for every 1000 Max Health] abilities damage.
Weapon Specialization Bonus +0.5 to aura radius.