It was a speculation that the stream was made to combat the Silver Dragon only but he can even feel the various reasons why that was possible.
Without Moon Blessing, the stream he will have crafted will not be a perfect counter to the Silver Wing Dragon but be only a nuisance.
The perfect combination of the Water Movement and the type of dots of light created it and it has a name.
Combination Water: Silver Wing Nemesis.
The whole stream was made to go against the Silver Wing's ability of suppression. The rest was just additives.
Now, as an extension of him, Seth can do many things with it. He can accelerate the coalescing, he can make it do the Four different movements skills.
Still Water, Vortex Water, Wave Back and Wave Forward Water. The above movement will happen with great ease and no control, but if he wants it to do something else he has to manually control it to a degree.
