Elf is a common knife that could be unboxed during the Christmas Event 2015 from the 2015 Christmas Knife Box. It can now only be obtained through trading since the event has ended.
After a successful purchase, you will be automatically redirected to a page to enter your ROBLOX username and be prompted to join our private server in MM2. You will then see an invitation for a trade(s) to receive your items. If you're confused, please watch the video at the top of our home page!