I never said he couldn't however Deidara avoids most of that my man, while throwing attacks of his own at gaara as well, if he goes into the sphere like he did last time, its pretty much GG, as with Manga Knowledge Deidara would simply blow up the third eye, yes Gaara can create another one however there would be a brief time span where he has no clue whats going on, in that tame Deidara does this around the sphere
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which ends Gaara
Doesn't matter
Hmm, i'm rater skeptical that he could do that with sand he created from the ground, however again it doesn't matter, the sand he takes from the ground and his gourd sand are two different things, his gourd sand is much faster and stronger, hence why he uses it for the Sphere, and for ambush attacks and quick defenses. Whereas the sand he creates is much less fast, and strong, as is evident in the Kimi fight.....In the air it would be slowed down even more.
Look above,