Explosion Release

Explosion Release is an advanced chakra nature. This element presumably combines earth with another unknown chakra nature. This chakra nature seems to give the wielder the ability to utilize explosive chakra in combat, allowing them to cause explosions in objects they come into contact with. Deidara and Gari of Iwagakure are the only known users of this kekkei genkai.

Also, it seems that Deidara's Exploding Clay ninjutsu are somehow related to this chakra nature. It is likely that he utilizes the kinjutsu he stole to knead this explosive chakra into his clay.

Trivia

 * As Deidara claimed he possessed this kekkei genkai, it suggests his Exploding Clay is related to it, despite it being an referred to as being earth-based techniques.