Brahmastra.

In ancient Sanskrit writings, the Brahmastra (Sanskrit: , IAST: Brahmstra) and its variant the Brahmashirsha astra were supernatural weapons used in various Hindu mythological wars and are collectively called Brahma weapons. The Brahmashirsha astra was a weapon that could destroy the world. These weapons are all created by Lord Brahma.

The three weapons are commonly called brahmastra by the various versions of the Mahabharata, Ramayana and the Puranas. As described in a number of Purana, it is considered a very destructive weapon. The Brahmastra never missed its mark and had to be used with very specific intent against an individual enemy or army to uphold the dharma, as the target would face complete annihilation. It was believed to be obtained by meditating upon the Lord Brahma, or from a Guru who knew the invocations. According to ancient Sanskritwritings, the Brahmastra is invoked by a key phrase or invocation that is bestowed upon the user when given this weapon.^{[citation needed]} The user would have to display immense mental concentration.

Since Lord Brahma is considered the Creator of Sanatana Dharma, it is believed by Hindus that Brahmastra was created by Him for the purpose of upholding Dharma and Satya, to be used by anyone who wished to destroy an enemy who would also happen to be a part of his (Brahma's) creation.^{[citation needed]} The target, when hit by Brahmastra, would be utterly destroyed.^{[1][not in citation given]}

It is termed as a fiery weapon that created a fireball able to threaten the world with destruction.^[2] There was also a severe decrease in rainfall with the land developing cracks, as in a drought. The Brahmastra is mentioned in the epics as a weapon of last resort and was never to be used in combat.

The Brahmastra, as described in the Mahabharata, is a weapon which is said to be a single projectile charged with all the power of the universe.