Rarely found, but not so rarely that they are unknown, these black, claw-like beads are sacred extensions of the will of the Assassin god Iris. Should a character take into his possession one of these beads, and they desire revenge upon another creature, the DM must make a secret Will save (DC 45). Should the save fail, the creature gains a direct psychic link with the Assassin god himself. While this link is maintained, the character can communicate with Iris telepathically, regardless of distance, and can direct the Assassin to kill one creature or destroy one location. However, once the creature is killed, Iris will come and claim the person as his payment.
These beads are constructed of omihalcon, and are completely indestructible to all forms of magic and external force. Only Iris can destroy his own beads, and he never chooses to do so.