Bone of the Kindred
This two-night ritual creates an enchanted weapon made of bone or ivory. The ritual requires the lifeblood of a Kindred. This blood is absorbed into the weapon and cannot be used for any other purpose. The enchanted weapon inflicts aggravated wounds. When in use, the weapon seems to "drink" any blood that is on it.
This seems like a rather inefficient way to create an aggravated weapon, but permanently transmuting a vampire into an object is pretty powerful in itself. -Jamie