“Blue dragons descend from the extraordinary Gormfaileas line. Known for their formidable size, they are the most ruthless, especially in the case of the rare Blue Daggertail” (Yarros 29).
Known color variations: Navy blue,
Blue Daggertail: (Sgaeyl) The rarest of the blue dragons. Their knifelike spikes at the tip of their tail can disembowel an enemy with one flick.
The Official Empyrean Series Fan Club 