Yata no Kagami

The Yata no Kagami (八咫鏡, Yata no Kagami; Literally "Eight Hand Mirror") is a sacred tool once used and crafted by the Sage of Six Path. It is a tool of legend, believed to not even exist within the mortal world. The Yata no Kagami mirror utilized by those who wield the Mangekyō Sharingan is the spiritual essence of this mirror. Legend says that combining both the spiritual essence and the mirror itself, they can attain a higher state of being, but it has never been proven.