The Yata Mirror was an ethereal shield with no set form or properties and has the power to alter every one of its attributes. By doing so, it can be used to negate any attack, whether it be spiritual or physical. As such, it is said that the Yata Mirror has been endowed with all nature transformations, changing it's nature to nullify all incoming attacks.
The Yata no Kagami (八咫鏡, literally meaning: Eight Span Mirror) is one of the Three Imperial Regalia of Japan (三種の神器, Sanshu no Jingi), together with the Kusanagi no Tsurugi (草薙劍, literally meaning: Grass Cutter Sword) and the Yasakani no Magatama (八尺瓊曲玉, literally meaning: Eight Shaku Curved Jewel).
- Third Databook, pages 274-275
- Third Databook, page 275
- Naruto chapter 393, page 9