This time, however, instead of becoming a Shugo, players will be transformed into a bear-like Khum'gom. Even more power can be obtained if players transform into a Nightmare Circus Harlequin using an item available via quest and in the store. Also, anywhere from two to six players can participate. The instance consists of three stages, and rewards can include exclusive costumes and wings, dyes, consumables, manastones, and much more. For a full accounting of all the possible prizes and a breakdown of each stage, check out the official announcement. But if you want to get in on the event, you'd better hurry -- the Nightmare Circus is in town for only two weeks and packs up November 6th, 2013.