Plague Dragon

The Plague Dragon was a powerful, undead dragon that wreaked havoc on the Kingdom of Egalstria. Originally created by accident by a member of the noble house Revelle, that same family dedicated itself to slaying the dragon. However, it kept coming back. Several Revelle's had slain the dragon, but in the end, it was the Astellian Prince Hana who slew the dragon once and for all in the year 867, sealing the beast away forever.