In Norse mythology, Leyding is one of the fetters (shackles) prepared for Fenrir. The gods noticed that Fenrir was growing rapidly every day, and since all prophecies foretold that Fenrir was destined to cause them harm, the gods formed a plan. The gods prepared three fetters: The first, greatly strong, was called Leyding. They brought Leyding to Fenrir and suggested that the wolf try his strength with it. Fenrir judged that it was not beyond his strength, and so let the gods do what they wanted with it. At Fenrir's first kick the bind snapped, and Fenrir loosened himself from Leyding.
Due to the extreme similarity, it is possible that "Rējingu" (Leyding) in this card's name, was mistranslated as "Raging".