For whatever reason, I never got into Magic: The Gathering or the Pokmon trading card game as a kid
Blightsteel Colossus Here comes the most feared and hated infect card in Magic: The Gathering: Blightsteel Colossus
Not only that, but the borderless full art cards have extremely reasonable price tags at the moment
On the other hand, we played against Mono-Black Auras, which was overloaded with Dead Weights and Mire's Grasps, and it felt like we had zero chance of winning (in part because of the amount of removal our opponent had and in part because enchantments get around many of our sideboard cards, like Miscast and Seasoned Hallowblade)
Esper (WUB) builds around White, Blue, and Black for ultimate control
In terms of what Commander Bracket this deck belongs to, I would also place it firmly in Bracket Two