It would magnify that component of the market
Mono-Green similarly looks like it could outclass this deck, but the popularity of sideboard cards like Noxious Grasp and Blightbeetle seem to currently put black on top
That said, rule of cool: Zendikar Angels are badass
Id go as far as to say that the best possible deck you can get in Scars of Mirrodin Limited is an infect deck, though R/W Metalcraft is still a much more reliably good deck in general
That is the idea behind the creature card Risen Reef, which perfectly depicts such an impossible phenomenon
Two immediate options that come to mind are Jodah, Archmage Eternal, which basically lets you cast this for WUBRG and then net yourself 5 mana to help cast the spells you reveal, and Mizzix of the Izmagnus, which can cast this 10cmc spell for as low as RRR