The doppelgangers look in surprise at their opponent's transmutation, connecting the dots to their own similar form, "A Sage?" The original ponders aloud. This would be confirmed as Kamui sends out his Sage Art: Gale Palm towards them, but despite the powerful Senjutsu imbued attack threatening them, the original looks calm. In fact, he seems rather elated as his quick thinking as a tactician comes into play, "I'll take care of the kunai and activate, some of you get the rest!"
He proceeds to jump into the air, forming a single handed kata while 6 of the clones standing in the forefront of the wind extend out both their hands in a clawed defensive position. Quickly activating the seal upon the palms of the Naruto's hands, they would utilize both the Advanced Element Sealing Method and Advanced Element Unsealing Method. Vapors escape the seal and would draw the wind into it, sealing a portion of it in each seal. Immediately following they would unseal the jutsu, sending it back at Kamui with same force and momentum, knocking the debris back towards him as well. Knowing the bombs would eventually detonate from one of them, the Narutos prepare by focusing a small amount of Fuuton chakra in their inner ears.
There is however a slight pause between the Sealing and Unsealing, which wouldn't bode well for the clones seeing as they would be unable to absorb the kunai, this would be where the original comes in. Since the knives are marked, Naruto would simply use Hiraishin to teleport the marked kunai to another that he throws towards Kamui, redirecting them back on their original course towards the Kage. Soon he detonates the bombs as planned, but they wouldn't be the ordinary incendiary sort. Intense blinding light and sound erupt from them, powerful enough to even overload Enhanced Senses. The sound and light threaten to temporarily blind and paralyze his opponent, the fuuton chakra channeled by the clones prevent sound from entering momentarily, but still temporarily deaf and blind.
The original Naruto, who blinked at the last second, prevented himself from going blind. Lastly, in conjunction with the devastating light, sound, and wind, Naruto would control his airborne disc with his chakra and use it akin to a giant Fresnel Lens, rapidly absorbing rays and harnessing the power of the sun into a singular beam of intense heat. This attack would be extremely difficult if not impossible to evade if Kamui is caught by the sound, light, and wind, especially considering the Uzumaki is using Nature to his advantage, leaving no chakra to sense the impending doom.
If contact is made, Kamui's head is pelted by a fire blast of 500 degrees, getting hotter as time goes on, but a little more than doubling the moment it comes in contact with his Wind Aura, setting his opponent ablaze at over 1000 degrees in a massive inferno of destruction. If successful, Naruto's combatant is vision-less and disabled as hes cut through by kunai, struck by his own wind, and turned into a mausoleum of conflagration.