The rarity of Flight of the Crescent Moon is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Flight of the Crescent Moon is a skin for Luna. The skin was added to the game on December 13, 2013, it was created by Anuxi ♥.
Flight of the Crescent Moon is currently one of the most popular skins, but it is rarely seen in the game due to its high price.