Up to 5-20% Strength based on the charge time of your heavy attacks. Stacks 3 times.
12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
14-20 Critical Chance on Weak Spot Hit until your next Critical Hit. Stacks 5 times.
14-20% Strength on Salvo's First shot.