This move was created by Hayate to mimic a move that he's seen from another Yuumei member.
Hayate has collected a large amount of Gigai's and soul candy. He simply put explosives controlled by Hayate in the gigai with a bit of messing around, and there you have it. A clone bomb.
Due to size he can't carry more than 1 into normal battles, also there small expolsions compared to other bombs and explosives meaning its an effective but not really powerful move.