Board Thread:Theories and Speculation/@comment-5407586-20150624095943/@comment-25079709-20150703152644

To change it from moving to breaking.

C0 is jutsu that can be use only one in lifetime so only people who saw exactly how it works are Deidara and Sasuke, that's why I doubt anybody else knew that Deidara must put clay in his chest. But then again if Omoi knew how it works and if he believed Deidara, then he could just put his sword there to block Deidara's mouth and Raiton to have better effect