After listening to the words of his opponent, Iori responds...
"You see serpents have a much greater chance of survival in a wasteland, dirty dogs...not so much."
As Iori completes his words he feels slight vibrations coming from within the ground beneath his feet, he then glances down for a second and notices the earth all around him starting to rise, seemingly the earth was rising in such a manor that it was to trap him within it, Iori looks back up at Unari and says...
"I believe this is where we begin?"
Just as the last section of earth closes, completely trapping Iori within it, Iori then swiftly performs a single hand seal and inhales molding a great amount of his fire release chakra before expelling it through his mouth by exhaling, he then forms the large amount of fire release chakra into a large dragon head shaped ball of intense and blazing hot flames which blasts through the dome, and heads towards Unari, being it that the fireball would also somewhat keep Unari's vision blocked of Iori, he takes that exact moment in time to release his earth chakra directly into the ground just beneath his feet, he proceeds to turn the solid earth into fine sand, allowing him to sink into the ground and travel through it with ease, Iori then moves to his right, before surfacing at a short ranged distance of the dome created by Unari, he surfaces with his entire body parallel to the ground, with both his hands onto the ground, his one leg streched out towards his left and the other streched outwards directly behind him, while in this position where he is low to the ground avoiding any possible attack, should Unari be a sensory type, Iori releases a torrent of snakes through his mouth, that swiftly slithers across the ground towards Unari as a wall of snakes, each with their fangs sprouted from their mouths and ready to attack Unari.