spider man miles morales mtg card / Ultimate Spider-Man Borderless Foil - SPM Whenever you attack Marvel's Spider-Man x MTG Set

Legal to play in Commander, Vintage, Legacy, and Modern formats, the set was designed to include Limited Draft and Sealed play

This one is not a slam dunk like the next card on this list (and almost every one thereafter), but I do think that a deck that wants to make an Army might want it, especially out of the side

The original Counterspell was already a good card, but Mana Drain managed to be better, and that, combined with its sheer rarity, gives it a price tag of $362.22

The price of "Disney Lorcana Into The Inklands Ruby & Sapphire Starter Deck Pre-Order Deposit" at DreamDaze Comics Fun & Games is USD $3.00

While I won't guarantee that this will open the floodgates on three-color decks in standard, it sure gives it a shot in the arm