fisherman pokemon card - 125/144 Non-Holo Trainer discard this card Pokemon Single Card HS HEARTGOLD

Its mere presence could cause high-level players to favor fast decks with Pokmon that can be used to their full potential with little Energy, for example

All the numbers add up here, though Fanatic's clearly at its best in decks with 4+ power creatures

While that specific version of the card is out of reach for most collectors, there are numerous other printings (such as the XY Evolutions modern reprint) that make them quite a bit more affordable

Giving decks these tools would make them too powerful, and are kept out of the format

This feeling was compounded by all of the Surveil cards spoiled first: Unexplained Disappearance is precisely Voyages End with Surveil