The Ten Directions' Road Home

In 845 AD, Emperor Wuzong of Tang suppressed Buddhism. A Tantric master who wished to remain anonymous foresaw a great calamity a thousand years in the future. He scattered ten ritual artifacts across the land, including a bronze figurine, a bronze mirror, a seashell, a shadow-puppet box, and a pit of baleful energy. Each artifact sealed away a different kind of soul. The master left behind a prophecy:

"A thousand years hence, calamity will rise in the east. Ten people will each hold one artifact and lose one thing. When the ten gather, ten thousand souls will return."