Char + Psionic Blast = U/R Counterburn?

So-called “straight” Counter-Burn strategies haven’t been popular in a while. Let’s face it: the tools weren’t there! Countermagic was neutered, and while the burn has always been available to set the world ablaze, both lifegain and efficient creature beats served to stymie the archetype. Nowadays, however, we have a few more arrows to our bow… And so I refine a potential U/R deck over the course of three builds, playing each against U/G Beats, Rakdos, and Solar Flare to see how they shape up!