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There are two threads about it on the PokeGym forums, which I list for the sake of completeness, but no really conclusive information I was able to find: Space-Time Distortion

Sad #5 So what are the odds that these stay on shelves and aren't scalped like all other Pokemon tcg products

1 Dragon Rulers are the Strongest Dragon-Type Deck of All Time Incredible Consistency With Varied Attributes Dragon Rulers recently received some modern support that makes them an enticing rogue deck option, but they are nowhere near as powerful as they once were

This includes very low power cards and cards that in very specific archetypes might have a role to play