C46 Transforming into a black-robed ghost servant

Immediately after, the dozens of black-robed ghost servants let out another shout, slowly turning the huge stone mill with all their might. At the same time, a mournful howl came from their eyes, along with the sound of flesh breaking into bones!

As the millstones turned, I knew that the contact surface of the two discs above and below was carved with a neat row of grinding teeth