As a result, if we are just looking at the numbers, I'd say the idea of a Standard banning is silly
The theme of the Madrigal Magic Starter Deck is synergies between the titular Madrigal Characters
Once transformed, you can utilize his -3 ability to cast instants or sorceries from your graveyard, essentially drawing from a well of past spells
You know you'll get it out on turn 3-4 and you just need to hit a way to mill or search for something to put in your yard early, and then you can move into midgame with a big threat on the table, and the ability to get it back without jacking up your commander tax repeatedly
Before you ever consider common or uncommon specs, consider your options in mythics, and then rares where you can cycle fewer sales for bigger profits per sale, reducing your time spent per transaction and lowering your incidental transaction costs such as shipping and materials