There is a set of codes that can be redeemed by putting them in here on bungie.net... Where your id is displayed in the top right corner, click and activate the drop down menu, to sign out, there is a redeem codes tab. Just go there and enter the codes and you can get some different emblems, 2 shaders, and some grimoire cards... After you enter the codes, the shaders and emblems can be found at the special orders desk in the tower...