Some further details on what needs to be done can be found on Path of Exile Wiki:To-do list/Automatic upgraded from and issues can be posted on the talk page. Ambu's Charge is a unique Crusader Chainmail.
(180-220)% increased Armour and Energy Shield
+(60-80) to maximum Life
+15% to all Elemental Resistances
Gain an Endurance Charge when you take a Critical Strike
Share Endurance Charges with nearby party members
2% of Life Regenerated per second if you have been Hit Recently
Nothing stops the pain like a courageous rush into battle.
A simple tool to price check your items in path of exile by "copy and paste". It is that simple!
Price in Leagues