This egg was only given out for the Halloween Bash of 2010.
At last the Halloween dragon of Year 2 is revealed! The Halldrag is one of the evilest of dragons; it draws its power from the dead who have lived unfulfilled and desires to see that all humans live their lives unfulfilled. It's not recommended by the Science and Research Center in Ark City that you ever take a Halldrag egg. Do so at your own risk.