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At Kotaku, we independently select and write about stuff we love and think you'll like too. We have affiliate and advertising partnerships, which means we may collect a share of sales or other compensation from the links on this page. BTW – prices are accurate and items in stock at the time of posting. Trading card games (TCGs) are known for being money pits. You can spend infinity dollars on games like Pokémon or Magic The Gathering. But amongst all the gimmicky accessories and things that are just nice to have, there are some essential accessories that mean you’ll have...