Sure, the backside could be big if you manage to defeat the battle, but considering it costs six mana (and five damage) to get Winowing Forces on the battlefield, you're not really getting much of a discount compared to cards like Beanstalk Giant or Cultivator Colossus
4th Rank: Turn Inside Out Alongside other cards like Felonious Rage, this card is part of the nasty package that made Mono Red Wins' two-turn bombing strategies so effective in BO1
Staggering Insight doesnt give clear insight into what WU is about, but both colors have a mixture of flying, Constellation, auras, and disruption
That trio of card draw, removing a dork from combat and Imprison in the Moon is brilliant
As I mentioned before, all of these decks are good value, so all of them represent good buys if you want the cards