+5% Chance to Block Attack Damage while Dual Wielding
15% chance to gain a Frenzy Charge when you Block
15% chance to gain an Endurance Charge when you Block 
Swagger is a notable passive skill that grants increased weapon damage and additional chance to block attack damage while dual wielding. It grants a chance to gain a frenzy or endurance charge on block. It also grants increased damage with ailments while dual wielding.