Beginning with an overview, this long essay addresses origin fantasy, Kāpālika doctrine and exercise, the relation to Viṣṇu compared to Dionysos-Apollo, Brahmā’s fifth head, antecedents in Vedic dīkṣita , the supreme lord of Kashi, who has the brilliance of 1,000,000 suns, who will save devotees from your cycle of rebirths, https://www.youtube.com/@tantramantraaurvigyaan