Probably everyone that has been collecting Pokmon Cards since close to the beginning will have this card in their collection
In the latter case, since the door becoming unlocked is what causes the ability to trigger, effects that cause abilities that trigger when a permanent enters to trigger an additional time (such as that of Panharmonicon) won't apply
Im looking at it in light of how much it would actually get played
One or two turns different and we would have seen a different champion crowned, shuffling about a great many elements in Magic development and history
Fuji, Scoop Up, Nightly Garbage Run (not found in this game), and Chansey
Psychic Infinity remains a fan-favorite attack, but with so many Mewtwo variants available, demand is spread thin