The Shri Bhairav or even the Bhairavnath Yantra is thought to be The most impressive on the Hindu Yantras. Bhairava as been consistently pointed out in several preceding posts symbolizes the unavoidable time, which even the substantial and mighty dread. He protects his devotees from from enemies like greed, https://www.youtube.com/watch?v=pMcH9t4uLqs