Lich Dragons are a Halloween dragon released on November 2, 2014 and dropped until November 4, 2014. All Lich dragons had their catch date changed to October 31, 2014 as return for the late Halloween drop.
This egg smells rotten.
With a creak and a crack, the egg pops open! Except you wish it hadn't; the smell is worse, and the hatchling looks very sickly.
Although still weak, this young dragon has grown considerably. It's worrying you, however, as its injuries aren't healing.
Although any dragon may become a Lich through the forbidden spell, it is almost always only the very ancient and large who possess the power and knowledge to do so. Lich dragons are similar to zombies, but Lich dragons retain control of themselves, containing their soul in a small item, leaving their bodies effectively invincible. Over time, the flesh sloughs off of their bodies, eventually turning them into skeletons. The item that contains their soul is defended with every fiber of their being, and it is often hidden in a place only the Lich knows or carried with them, although this is riskier. A Lich dragon can only be killed if its soul container is destroyed.