Brahmastra

Brahmastra(Brahmāstra) is a weapon wielded by Sayotsu Uzumaki 's Kangiten and is said to be one of the most powerful weapon in existence,the Brahma Astra (Astra means 'weapon'). As described in a number of the Puranas, it was considered the deadliest weapon.The Brahmastra never missed its mark and had to be used with very specific intent against an individual enemy or army, as the target would face complete annihilation. Also it is so strong that it can reduce down everything to ashes even with the briefest touch and the force created by swinging it is so strong that it can hollow out an entire Mountain,Brahmastra's final ability is absorption of chakra from different places,the user places the brahmastra in sky and it begans to absorb any kind of chakra within its huge range of three kilometers. The weapon was also believed to cause severe environmental damage. The land where the weapon was used became barren and all life in and around that area ceased to exist, as both women and men became infertile.Hence it came to be known as the "Ultimate Weapon",Sayotsu also carries a sword called Brahmashira which is a replace of his White Apocalypse,it has shown almost same powers as the brahmastra but it is smaller in size,also it posses less power but it can cut through chakra.