Rocket's Mewtwo occupies a unique narrative space in the Pokemon TCG, representing a version of the character at its most vulnerable and most dangerous simultaneously, and that compelling duality gives it an emotional resonance and sustained collector appeal that simple rarity metrics alone cannot fully explain
This power stops working while Brock's Primeape is Asleep, Confused, or Paralyzed
Also, the fact that fair decks rarely use 0 mana spells, made CotV a viable sideboard contender for various archetpyes
They would remain in the OCG forever with no chance of an English release
That said, if you've got a card you think might be counterfeit, a combination of the tests below should alert you to most of the key red flags that indicate a card isn't genuine, weeding out all but the highest quality fakes