Müsstler was one of the few, even in those days, who knew the secret of infusing the steel of a weapon with a living soul. They were called speaking swords, though their speech was audible only to those holding them at a telepathic level. Shortly after his retirement, Müsstler was kidnapped from his home by a local cell of daemon worshippers. They knew that he had made powerful speaking swords for crusaders and the church, and desired him to craft a weapon of supreme and malign evil–a latter-day version of the speaking scimitar Aldebaran which had corrupted men and built up empires until it was lost to the deep after a naval battle.

The swordsmith complied, fashioning a horrific weapon. Its serrated blade was a deep and sinister gold engraved with skeletons and mounted on a hilt shaped like a human bone. The Bone Blade was then ritually infused with a soul drawn from the beyond; at the height of the ceremony, Müstler himself was used as the necessary human sacrifice.

But the wily old man had foreseen his fate, and played a final trick on his captors. He infused the Bone Blade with a timid and kindly soul that was nevertheless boastful and supplicant. The weapon therefore appeared to go along with the will of its evil daemonic masters but would fail to follow through on its promises or use its powers on innocents or the good–its full potential was only unleashed when the cultists fell to fighting among themselves, for speaking swords used against their will are no more effective than a heavy blunt club but can cleave hillsides otherwise.

So it was that the Bone Blade passed from daemonic cult to daemonic cult across the world, sowing the seeds of destruction among them. Just as Müsstler wished, its dread legend grew so much that the cultists fought over possession of the weapon that would eventually be their own undoing.