Iwagakure Kinjutsu

This kinjutsu that was passed down in Iwagakure allows the user to knead chakra into materials. It is likely that the mouths on the user's palms and chest are a direct result of using this technique.

Deidara violated the law and stole this technique in his quest to find the ultimate art. He used the technique to infuse chakra into clay, creating his Exploding Clay. He also once ate some of Gaara's sand and infused it with his chakra, to make it explode.