Wyrda was picked out of a large number of Riders' blades by the human Rider Cain, for whom the blade was altered by Rhunon. Cain is the Rider of the dragon Nisroc the White, son of Kastigir the Bronze and Miremel the Brown.
Added to Wyrda's pommel is a clear diamond that contains the life energy of several bears that Cain killed. The blade is ghostly white and has miniscule teeth along its edge, allowing it to deal more severe damage.
Wyrda is named after Fate, the unstoppable force of destiny. Cain named his sword this in the hope that it would give the sword great power, and for the eerie cry of the White Raven Blagden.