The raid sparrow is called the XVO "Timebreaker" specifically in quotations.. why?.. unless its a clue, right? I have all sorts of theories that the sparrow is somehow used to unlock a new chest/ possibly even a new room to the raid. My most recent idea is that it is somehow used in the atheon fight. Atheon opens the time stream to either teleport you into the past (green) or the future (yellow). What if the "Timebreaker" is used during this fight to open or unlock something that is otherwise overlooked. I have other ideas on how the sparrow could be used and other clues, if you would like to try and figure this out and test these theories add me on XB1, id love to try them all. EDIT: maybe open both portals after you kill atheon and fly through with the timebreaker? -Xarnage