Background[]
Once an evil immortal, he led a campaign to conquer three thousand ancient worlds, and killed numerous immortals. In the end, he was bested by tribulation, and killed. He left behind several of those Immortal-Slayer’s medallions. Ghost Emperor Yama was unsure if these medallions were simply part of a single, much larger medallion. If you can collect them all, then you can search for his core teachings and doctrines.
According to the stories, an Immortal-Slayer’s medallion will only pick someone with a strong destiny. If that person perishes, then the medallion will leave to find another target. Supposedly, it takes away some of the destiny of whoever carries it. They are powerful, but inauspicious, and also very difficult to control.