the brahmashira astra (brahma's head weapon), manifests with 4 heads of brahma at the front and is 4 times stronger than the normal brahmastra. is a weapon that manifests with the fifth head of brahma at the front. it is a weapon that was capable of destroying the world. arjuna and ashwatthama almost used the astra against each other near the end of the kurukshetra war, however both were stopped by narada and vyasa to prevent the destruction of the world.