Another one-off render.
The mass amalgamation of hate, fury, rage, and pure evil embodied through a mask of black intents. It survives by luring in a victim and coercing them to wear it. Once worn, it cannot be removed until the victim withers away from the feelings of anger and severe depression. Then the soul of the wearer is absorbed into the mask forever.
The last record of it's location is known only as being removed by monks and being encased in concrete. Nobody knows where it was moved to, but it can be assured it is heavily guarded.