Also that retains some type of religion in the advantage of yantra plus the mantras connected to it. You should also be aware the Yantra isn't a Instrument which is meant for the maniping or hurting of many people. मन्त्र ज्यो शत्रु भयो। डाकिनी वायो, जानु वायो। ॐ वज्र मुस्ठी https://www.youtube.com/@AacharyaGoldieMadan