Orkish Bloodsmithing

Bloodsmithing was an art that was practiced by the race of the orks, who, in a series of rituals and primitive workmanship transformed bodies of their fallen warriors into powerful tools and weapons. These weapons were called Kraaz, which meant something along the lines of "spirit weapon" or "blood weapon", and housed the souls, or at least some remnant of the will of who they were made of.

Often, they were made from fallen warriors, and then given to their son or brother. When the new owner would die, parts of his body (and so his spirit as well), would be added onto the weapon, making it even more powerful, especially if he had a close bond with it.

A Kraaz can not be wielded by just anyone - it has to accept its owner as strong (and worthy) enough to wield it. If it is not familiar with who it is given too already, it will attack the spirit of whoever dares to touch it, and only if it is overpowered (or otherwise convinced) will it yield to its new owner.

While the art of bloodsmithing is believed to be lost, however, ancient Kraaz still remain - most are buried with their owners, or in a dragons hoard, however, some have been found (or passed on) to new, human owners, who use the primal power of the spirits within to fight against the demonic hordes, and the dragons.