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I'm afraid you're kinda late on that. In the original version (the translation was bad there), in Chapter 512, Deidara states he has "Explosion Release (爆遁; Bakuton)," which confirms that he has it. For now, it is assumed he uses the Iwagakure Kinjutsu to add his Explosion Release chakra into the clay he creates with Earth Release, which results in his Exploding Clay. It's also assumed that Sasuke's Lightning Release diffused Deidara's Explosion Release because Explosion Release chakra contains Earth Release chakra, and therefore is also weak to Lightning. Of course, everything is assumed, and we don't have much detail on that yet. --GoDai (talk) 01:08, January 3, 2011 (UTC)
Just so you know, you might as well get rid of Crystal Release from your theories because Kishimoto didn't come up with that, the anime producers did. It was never in the manga and probably never will be. So in the manga, Earth+Lightning spot is still open. --GoDai (talk) 01:41, January 3, 2011 (UTC)
Well actually, I do have my own theory page, User: GoDai/GoDai Seishitsu Henka, Combinations, and Theories, although I don't update it too often. My original idea is that the compressed Wind chakra and vibrating Lightning chakra would create powerful resonating shockwaves. I imagine something like that would also be very good for Chakra Flow in sharp weapons, as seeing how both Wind and Lightning increase the cutting power of blades, a resonating metal blade may be able to cut through basically anything. I would also suggest going to User: Omnibender/Elemental recomposition table. Omnibender has some pretty good ideas. --GoDai (talk) 08:18, January 3, 2011 (UTC)
Re: Swift Release Edit
I thought the same until we saw Darui using Storm Release, which chronologically, was first heard of in the third Shippūden movie long before Darui was even introduced. I don't speculate new natures for certain combination if there are other natures that fit the combination. Omnibender - Talk - Contributions 18:29, January 3, 2011 (UTC)