Bleucorundum (or Bleu for short) was a sapphire greatwyrm who returned to Quelmar when prophecies began to speak of the return of Sardior. Bleu believed it was their duty in this new world to collect and begin the rites of resurrection that would restore Sardior to life.
About
Bleu had a special psionic connection with the lost god Sardior which manifested as a strange call from beyond this world. She was prepared to answer that call by amassing and collecting the Ruby Court once more.
Bleucorundum once owned the Galadiir, a draconic name referring to the Corundum Egg of Sardior. During her millenia hiatus from the realm, the Galadiir passed hands many times, ultimately finding itself under the study of a wizard named Revan in the town of Tsojcanth. Bleu set her lair up under the river near Tsojcanth in an attempt to recover the Galadiir, but found that one of the town's children had sneakily stolen it away. It was eventually found by heroes of the Greedy Green and returned to Bleu.
Powers
Bleucorundum held the Sapphire Boon of the Ruby Court, which allowed her to make creatures psionically invisible. It did not impose actual invisibility, but rather blocked the mind of enemy creatures from being able to perceive the presence of a creature with the boon. In at least one instance, Bleu gave the boon to heroes of the realm, making them invisible to dragons. This boon is remarkably similar to the natural boon that is formed from the Existence Crystals of the Warforged, and with good reason.
The power has also been used at least once against the heroes of the realm, when it was applied to a Gelatinous Cube that almost destroyed Arlin and Violet.
Lair
Personally, Bleucorundum hoarded histroical artifacts, especially those with any importance related to ancient wars, including prehistoric ones. She believed that most creatures could not be trusted to properly safeguard historically significant artifacts, but she could.
Some of the items included portraits, ancient money, coat of arms, armors, enchanted swords and weapons, old infertile dragon eggs, a dragon chess set, tapestries depicting the ancient battles of The Four Dragons, and a music box that plays the haunting song of Sardior (which sounds a lot like "I Will Wait" by Mumford and Sons).
