(2 items) Adds 657 Critical Chance
(3 items) Adds 657 Critical Chance
(4 items) Adds 1487 Offensive Penetration
(5 items) When you deal Critical Damage, you gain a stack of Precision, increasing your Critical Chance by 177 for 5 seconds, up to 10 stacks max. At max stacks, you also gain Minor Force, increasing your Critical Damage done by 10%. This effect can occur once every half second.