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Check out the cost/production section which will show you how many sources you have for each color, compared to how many times that color comes up in the cost of your included cards
Of these three, the builder wants to find any given card as easily as possible, the Standard player will want a system that allows them to store cards in sets of 4 and a system that easily adapts for rotation, while the completionist might be better off sorting their cards per set and collector number
Adding this to an Atraxa, Praetors' VoiceAtraxa, Praetors' Voice deck could give another counter to your board, as well as some additional interaction to slow down your opponents
Summary For high-value One Piece cards, it is harder to fail if you look at them including the specification, condition, grading, and number of listings, rather than just the popularity of the card itself
Trainer's Notes For my own collection, I use KMC Perfect Fit sleeves for cards going into binders or semi-rigid holders, and pair them with Dragon Shield Outer Sleeves for my most valuable cards