One underappreciated option is to name the card that would cause a problem right now rather than trying to stop a long-term threat
Vaultborn Tyrant takes that concept to the max: Not only does it trigger its own draw ability, but it removes the downside that comes with dying
This digital option with free cards will lower the barrier to entry for players. As someone who hasnt opened a physical pack of Pokmon cards for probably 15 years and has only dabbled in the trading card game, I can that I had an absolute blast opening booster packs to add to my Pocket collection
The Poison Muscles Ability allows the player to deck search for 2 Dark Energy and attach them to Okidogi ex
Damage wears off, and "this turn" and "until end of turn" effects end.) At the beginning of your next end step, you lose the game
Serras Sanctum also saw a swift banning back in the day, though it is currently legal in any format you can play it in, like Legacy, Commander, and Vintage