Also that retains some sort of religion from the advantage of yantra and also the mantras linked to it. You should also remember the Yantra just isn't a Device which is meant for the maniping or hurting of a lot of people. Lord Shiva unveiled the mantra to Mata Parvati, https://vashikaran43196.blogozz.com/34369904/5-simple-statements-about-mahavidya-explained