Investing in low sentiment cards also avoids some terrible scenarios
Otherwise, their secondary effects contribute towards fueling the GY for their primary effects

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No, you can evaluate your card all you want and give it a sealed hard toploader, but you need credibility to give collectors a sense of what standards you hold card grading to
In the games beginning, rarity was a byproduct of physical print sheets, leading to inconsistent card numbers
Because each spell was its own "card" with its own cost, I gave each a name