In an Old School 93-94 format with unrestricted Strip Mine, I would only recommend one lands that tap for blue are so important that land drops cannot be wasted on colorless lands
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If you want to see how different cards fit into your Magic: The Gathering deck, making proxies allows you to test out new play styles
On top of that, it also makes a Clue token each time, so youre also getting extra card draw when you need it
Simple cards have a number of advantages when it comes to success in CCC
However, there are far more opportunities for strategies to fall through and players to be left with no way of winning with the Emerald/Sapphire deck than there are with the Amber/Ruby one