Depending on context, these cards may be called prison pieces, hate cards/hatebears, sideboard cards, or, in some circles, stax cards after the ancient Smokestack-based deck which popularized not letting the other person play as a strategic archetype
Some have been around for decades, and some are relatively new to the format
Or share your decklists and brag about your climb up the ranks in our Discord.
Of course, playing the Pokmon trading card game on your mobile is convenient because you can take the game with you wherever you go and access it whenever you want
You can start collecting Bounty cards on the starting players third turn
The fact that this proliferates is also some nice icing on top