Also that retains some type of religion within the virtue of yantra and also the mantras connected to it. It's also advisable to remember that the Yantra isn't a Device that may be designed for the maniping or hurting of some individuals. मन्त्र ज्यो शत्रु भयो। डाकिनी वायो, जानु वायो। https://ricardoydgih.blogchaat.com/35361114/5-simple-statements-about-mahavidya-explained