Reach out by offering to buy their unwanted cards
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Number 9: Pikachu Reverse Holo 2002 Legendary Collection ($6,900) Legendary Collection was a main expansion of the Pokmon TCG that revisited popular cards from the Base Set, Jungle, Fossil and Team Rocket expansions
Oh, wait
15 King (Parallel) Market Price: $62.39 When OP-01 released, King was quite the underwhelming leader
However, these anti-synergies always sound worse in theory than they are in practice (see the current build of UR Murktide), particularly giving the turbo-fueling that DRC provides