In this example, Belle Mechanic Extraordinaire may only be played in a deck composed of the two inks Ruby and Sapphire since she is a dual ink Ruby-Sapphire card
I know a lot of people like this card ironically, but I think its a great way to start the list and have another metric to go by
Key ProductFeatures: Bundle of all 4 Commander Legends: Battle for Baldurs Gate Commander DecksParty Time, Mind Flayarrrs, Draconic Descent, and Exit from Exile
Decoction Module + Fabrication Module These two pieces, along with Animation Module, are a classic infinite combo, and Decoction Module and Fabrication Module go infinite with various combinations of the next batch of cards
Changing the card back would cause far more problems than it would be worth, and using card sleeves wasn't common at the time
They try to take advantage of people selling MTG cards