Brahmashirsha astra
Brahmashirsha astra is a mythological weapon described in the Indian epic Mahabharata, capable to kill Devas.
According to Mahabharata, the characters that Ashwatthama and Arjun used this weapon. It is thought that the Brahmashirsha astra is the evolution of the Brahmastra, and 4 times stronger than Brahmastra. The weapon manifest with the four heads of Lord Brahma as its tip. The characters Parasurama, Bhishma, Drona, Karna, Ashwatthama, Arjuna possessed the knowledge to invoke this weapon.This weapon can be invoked by using sacred mantras into any object, even to a blade of grass .
In Mahabharata,it is explained that when this weapon is invoked " it blaze up with terrible flames within a huge sphere of fire.Numerous peals of thunder were heard; thousands of meteors fell; and all living creatures became terrified with great dread. The entire welkin seemed to be filled with noise and assumed a terrible aspect with those flames of fire. The whole earth with her mountains and waters and trees, trembled.". When it strikes an area it will cause complete destruction and nothing will grow even a blade of grass for next 12 years.It will not rain for 12 years in that area and everything including metal,earth become poisoned.[1]