Iwagakure's 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 stole this technique in his quest to find the ultimate art. He used it in conjunction with his Explosion Release to infuse explosive chakra into clay, creating his Explosive Clay.