A lot of people hate fast RoF pulse rifles, but being able to have 42 rounds in the mag lets you capitalize on that headshot bonus more than other Pulse Rifles with as little downtime as possible. While yes Fatebringer has its uses against crowds of enemies, I have typically always preferred the Timepiece in arc burn situations. The ability to drop arc shields is also extremely handy with Knights and Captains being so common recently. I have yet to find a better legendary fast RoF pulse rifle out there. With how uncommon it is (very few ever drop from VoG), having it at 365 is just that much more enjoyable to use and show off Timepiece fans unite!