Perfect Block

A Perfect Block is a feat which you can perform using the Arc Barrier while Raiding. It is done by shielding yourself with the Arc Barrier within a small time frame to prevent being killed.
Upgrading the Arc Barrier can increase the Perfect Block Opportunity, making Perfect Block's slightly easier to achieve.
Perfect Block Opportunity: 0.25 sec
Perfect Block Opportunity: 0.35 sec
Perfect Block Opportunity: 0.50 sec
Performing a Perfect Block increases the shield duration by an extra 0.5 seconds.