Set your sample directly as a card count, or specify it by turn with a play/draw toggle the starting player skips their first-turn draw (rule 103.8a), so you have seen one fewer card on the play than on the draw
There are still a few more things to consider though, like extras and bonus cards that arent actually playable as part of the game
You cant use Big Beat in the next turn but there are a couple of fixes to this tech: You can use Leaf to retreat Buzzwole EX with an alternate Ultra Beast and then bring Buzzwole EX back to the Active Spot
Theres also Bloodtithe Harvester which doubles as a removal spell, Caustic Bronco to help keep your hand full, and Sheoldred, the Apocalypse to further punish your opponent
In 2023, the first Prerelease Raichu cards were authenticated by professional grading companies, and one of the most significant moments in its history came in 2025, when a graded copy sold through Heritage Auctions for $550,000