Marana Siddhi is a tantric rite to gain the ability or power
to kill. This ability is used to kill and destroy enemies. Marana Siddhi is
attained by those who have undergone rigorous penance.
Jnanarnava Tantra, Dwitiya Mundamala Tantra and Mantra Mahodadhi
texts contains detailed instructions about how the rite should be performed.
Mantra Mahodadhi text states that Bhadrasana is the posture
useful for marana. The skin of buffalo is suitable for sitting.
Some scholars are of the view that, such Siddhis do not
exist and is merely meant to scare people.