Jonas always weirded me out. Weird robot guy. There, I said it.
Seems like a solid take - the Vision, like Superman, has enough goofy powers to fill multiple cards. Did Jonas ever use the Solar Beam, or is that an informed power by virtue of Victor Shade?
Either way, I feel like it wouldn't play quite right, since "big on turn one, small later" is sort of the opposite of a "charging" power, you know? I'd use Markers, or maybe a pool of dice you can "spend," if that's the direction you're into.