Agneyastra

The Agneyastra is a Cosmic Weapon belonging to Kana Korimachi. It's a spear.

Overview
Agneyastra is a unique spear that upon impact would discharge flames inextinguishable by normal means and cover an very wide area. The flames are even incapable of being consumed by Amaterasu. Through experience in the use of the weapons, Kana is capable of extinguishing them.

It can be used as is or through the King's Arsenal.

Trivia

 * The Agneyastra is one of the Astra in Hinduism.