Oh girl no the black winter was a primordial eldritch storm that existed even before the multiverse. It is an eldritch blizzard that is the onset of universal destruction. It was the black winter that created galactus and as the black winter was a universe eater it's offspring galactus was a world eater. It is responsible for the bottomless hunger galactus feels. And it was defeated well by Thor when he used up all of the powercosmic to create a bomb to destroy it using galactu's body as a shell. It is a sentient nigh omnipotent storm that can do everything up to warping reality on a universal scale.
It is a mess. But I wanted to use this as a point of reference for the true limits of omega weather manipulation. Because as we know bobby can already create sentient ice golems so it should not be out of the realm of possibility that storm can make sentient life out of the elements but since she hasn't even ascended into true elemental status yet I doubt that would ever be.
Yes he wanted the powercosmic from galactus and the odinforce to use against the winter.