#25: Blizzcon 2016 Bastion
Starting off the list is probably Overwatch's rarest skin to date, Blizzcon 2016 Bastion. This skin was awarded to Blizzcon 2016 attendees, and to those who had purchased the digital ticket, so consider yourself lucky if you run into a player using this skin. Besides being rare, the new look that Bastion gets thanks to this cosmetic is a super slick black-and-blue combo that'll make you regret not buying that expensive digital ticket when you had the chance. Plus, his little bird companion gets a nice makeover, too.