Increases accessibility to desired cards
Speaking of which, Double Major functions as a single use of Volos ability, with the exception that you can effectively copy legendary creatures, too
I could certainly imagine the card simply being banned just because it doesnt make for enjoyable play experiences, and having seen Aetherworks Marvel loom over Standard once before, its not hard to imagine it being too good as Turn 4 Emrakul, the Promised Ends and Ulamog, the Ceaseless Hungers are soul-crushing and game-ending
Either way, both of these cards are capable of creating insane value every single time you create a Food Token
when it enters the battlefield, you put a +1/+1 counter on each creature you control
If you brought this pone to a competitive tournament you'd get completely obliterated anyway