Its going to keep some of the most dangerous creatures in the format off your face without locking down your own creatures like Meekstone does
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Pride of Lions, by the way, has some hilarious art that looks like it would be on a silly retro t-shirt you might find at a thrift store and thing, "How did this get made?" Seventh Edition also had some really great pain lands that tap to add one of two mana colors by spending one life, or generate a colorless mana without the life cost
Another site that can be used for raw cards, but much better for graded cards is PriceCharting
We might just want more cheap cards anyway
So, as supplies for Booster Bundles and Elite Trainer Boxes go down, the single-card market is going up