The rarity of Seablight Procession is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Seablight Procession is a skin for Undying. The skin was added to the game on May 17, 2017, it was created by 青舞飞扬.
Seablight Procession is currently one of the most popular skins, but it is rarely seen in the game due to its high price.