A few steps to get this:
1) Go here: Link: http://www.computerbild.de/gutscheinaktionen/cbs-xbox-Banshee-A
2) Enter your email (do not check the box), and hit the box that says "code
andordern".
3) Email with a Banshee Avatar code should arrive soon at your email, and
you can redeem that at the xBox Live website or on your system.
Credits to cheapassgamer members for originally discovering this.
