Previously known as Red Manta by players. While this mount was added to the game with the Update 9.7, it was only obtainable during a special offer by buying a package of 6 or 12 Premium Scrolls between May 31 and June 14, 2013. Buying the premium scrolls package only let you assign this mount to one character. It is possible to follow the offical FAQ made by CM Mirade here.
This mount has been available in the Store since July 14, 2017.