In An analogous legend linked to the delivery of Ayyappa, the demon Surpanaka earns the power to turn any individual into ashes by his austerities. Yantras connected to well being, like the Mahamrityunjaya Yantra, is alleged to possess therapeutic Houses. They are used in rituals to safeguard from health problems https://www.youtube.com/@Mahavidyabaglamukhi