Also that holds some type of religion from the virtue of yantra as well as mantras linked to it. You should also bear in mind the Yantra is just not a tool which is meant for the maniping or hurting of lots of people. मन्त्र ज्यो शत्रु भयो। डाकिनी वायो, https://thebookmarkfree.com/story20086815/fascination-about-bhairav