lord shiva who popularly known as mahadev,also known with the name called Mahakaal. There is no one like lord shiva shiva is self born, immortal, almighty higest form of divinity as mentioned in sanatan dharama. Mahakaal represents the eternal time which is free from cyclic nature. shiv assumed the Mahakaal form as soon as he heared satis demise and become an angry and ferocious god. To please the Mahakaal shiva mahamritunjay mantra conceived by sage sukrachayrya was the most appropriate mantra. As per markandeya purana it was this mantra that saved sage markandya from death. Even in todays world people chant this mantra to overcome with the fear of death and other fears.