Clay Clone

The user makes a clone out of mud and clay so that the clone takes in all the damage. In the anime, it is shown as a clone melting into clay after an attack from Naruto's Rasengan. However, Kakashi refers to this as a Kawarimi (Replacement) which possibly means Deidara can switch himself with a clone to avoid damage.

Trivia
In Naruto Shippūden: Ultimate Ninja Heroes 3, the clone is a stronger clay bomb (though not possibly close to the Suicide Bombing Clone) that dives into an opponent from the air before exploding.