Masterwork Item than increases Critical Rate.
Kamael Exclusive Weapon: Forgotten Blade Conversion

Increases Critical by 84. Increases damage inflicted during PvP. Improves the chance of CP recovery during an attack.
When enchanted to 4 or more, there is a chance that party members including yourself will get increased P. Atk., M. Atk., and the amount of recieved heal, and decreased MP consumption during skill use.