Nyx

The Planet Nyx is a harsh environment, large parts of its surface is covered in ice with frequent blizzards blowing across its surface, making it inhospitable to many races of the cosmos. Despite it's harsh conditions, a few races have managed to make it their home, such as the Arkuun, the Urzaal and the mighty Cryosis Draconis. It is also the originating planet of the metal Cryothine, being one of the only planets cold enough for ice to form it.