This isnt a Vintage or even Legacy Cube-caliber card, but it does strike me as an intriguing option for Cubes as lower power levels
Thing go well, and you only need one more win to make the Top 8
Lorcana The First Chapter Booster Pack 13 In this pack, we got: Commons: Beast's Mirror, Jetsam Ursula's Spy, Minnie Mouse Beloved Princess, Aladdin Street Rat, Maleficent Sinister Visitor, and Duke of Weselton Opportunistic Official Uncommons: Donald Duck Boistrous Fowl, Donald Duck Muskateer, and Prince Phillip Dragonslayer Rare or above: Plasma Blaster (Rare), and Maui Hero to All (Rare) Foil: Anna Heir To Arendelle (Uncommon) Slightly above standard with the Uncommon Foil
Contraband Livestock
The first choice for building a Commander deck is generally the commander, this is where your color identity comes from, and you add both partner commanders together to get the color identity
Granted the decks were different, but they were not weaker