This Mandala represents the very mouth of Arezura/Hell, and all the powers of darkness that dwell within it! It is the broken circle used by the Apostle of Ahriman within sorcerous and alchemical rites of magick. Through use it becomes a portal through which the Divs can move into this world and defile creation through the sorcerous objectives of the disciple of the Path of Smoke as presented within Black Magick of Ahriman.
This is the inversion of the Zarathustrian tool of piety called the Sofreh. The worshippers of the God of False light place a white cloth to keep religious tools from being corrupted by the forces of Counter Creation and the emanations of the Black Sun Ahriman.
This tool is one that ensures the person, and all implements within the broken Circle of Counter Creation are infused with the powers and potentials