> !Kabuto summoned Deidara during the fourth world war, but only used him to keep the Tsuchikage busy while he (Kabuto) kidnapped Yamato. He then unsummoned Deidara and has never summoned him since then. <br /><br />Edo Tensei makes Deidara immortal, which allows Deidara to use the C0, a giant explosion that covers an area of 10 km diameter, several times. Kabuto could have used this to eliminate the enemy units more effectively, but why did he not do so?