yugioh card in hand limit Yu-Gi-Oh! - Summon (LODT-EN079) - Light of Destruction - 1st Edition Summon Limit - Yu-Gi-Oh! Card

Hand traps are an indispensable resource for any competitive Deck in the Yu-Gi-Oh

If you do so, you risk incurring penalties, including being disqualified and removed from the event

Pikachu happens to be one of the poster-children of Pokemon so it definitely has more prints than a lot of cards, but even if you imagine 10% of that as an average per Pokemon (14 variations, or 5.5 prints) and multiply that out by the number of Pokemon presently in the franchise (721) youre looking at ~10k cards with variations or ~4k unique prints

Not because they aren't strong enough to keep up, but because the wording on the cards directly conflicts with how the game is played in modern times