Back in Skyrim we ran across a
wooden Dragonpriest mask that transports you through time. What was the original intended purpose of this mask? Were the Dragon Priests planning to grab reinforcements from the past once Alduin returned? Was it supposed to be some priest's last-ditch escape route? Or is it just what it appears - an overly-fancy vault key and nothing more? (I freely admit to being disappointed that there was no quest after gathering all the masks.) Is it likely to make an appearance in the upcoming DLC?