Blade of the Forbidden Flower
The Tremere guard the knowledge of this ritual closely, and with good reason. If even a whisper of its existence reached the ears of the Camarilla it would likely cause accusations of diablerie. The ritual requires the body of a vampire skilled in the use of the weapon to be enchanted. The body should be completely drained of blood, though the thaumaturge should set aside a small quantity of the subject’s blood for later use. The weapon must be cast and forged seven times as the thaumaturge recites an incantation. The magus then drinks the final point of the victim’s blood and then drives the blade of the weapon in its chest. The body immediately crumbles into cloud of ash, which is absorbed into the blade, leaving nothing behind but a black scorched mark. The weapon then becomes the vessel for the soul of the slain Kindred, imparting the wielder with strange powers and knowledge.
System: The creator of the weapon, or anyone she freely gives it to, are the only ones who may use it without harm; anyone else who attempts to do so suffers one health level of aggravated damage for every turn he continues to touch it. The blade retains all of the dead vampire’s Abilities and Disciplines, which can be used by anyone wielding the weapon as if they were his own. Additionally, the weapon inflicts aggravated damage upon those attacked with it. The spirit inside is unable to speak to others via any means, unless the weapon is destroyed, releasing the spirit.
This is a more detailed reprint of Weapon of the Kindred Soul.