It was blatantly obvious his brother was up to something even before he had begun to cover twenty-five meters of the area with smoke. Even still, with his brother's Byakugan active, it wouldn't matter if they weren’t eye to eye. But still, the appearance of the smoke meant he was above the ground at this time, or at least partially. He wasted little time in pulsing the chakra in his coils and converting it into lightning. Not even a second passed before a blinding ligh, filled with chakra, illuminated the immediate vicinity(1), while the light itself would shine for three seconds. The effects of the exposure would be; sharp pain and forced blindness, which would last a turn, with irritation from the technique lasting two more afterwards.
While Ray was hopefully incapacitated, something that would be inevitable seeing as how there would be no reason for him to assume such a technique was going to be used. In preparation for his next plan of action, he jumped off of the platform of wind and did his next actions while in the process of doing a back flip.
As the shining light began to fade after the initial three seconds, he would unseal Goliath, push lightning chakra through his arrow seal on his right palm as he pulled on the string. At the same time as he was doing this, he pulsed a technique into the arrow of artificial lightning and released it towards the epicenter of the cloud, opening his eyes at that exact moment.
As the lightning arrow was released, it immediately began to multiply(2) from one to two to four to eight and so on and so on a total of one hundred and twenty-eight lightning arrows in rapid succession. He made sure to cover the entirety of the cloud, focusing most of the arrows more towards the middle ten meter radius.
Obviously, while the lightning didn't have the capacity to disperse the smoke, it did shower into it with such speed that it wouldn't even matter. As the last bolt of lightning crashed into the cloud, the entire technique most likely leaving the ground inside a complete mess like swiss cheese. The condition of his brother was entirely on his brother's evasive skills.
He'd tighten his grip on his bow and complete his flip and drop towards the ground, landing as soft as a feather, unsealing a physical arrow, canceling his Razor wind, since his brother didn't want to engage in Taijutsu. Though, he'd keep his Air fist primed, unsealing a soldier pill as well. All these techniques, despite his masterful chakra control, had pushed his vast reserves to 70%, which the pill would push to 95%. He had four more and he was going to use them wisely, if the fight lasted any longer of course.
1- [Raiton: Gaibu Kogen/Lightning Release: External Light Source]
2- [Raiton: Denki Shogeki/Lightning Release: Electric Bombardment]