20??: In this alternate Kanto region, Pokemon trainer Red and his rival's journey begins before Professor Oak finishes creating a digital Pokedex, so the story shifts its focus to the adventures of Chase and Elaine in Let's Go Pikachu/Eevee
Powerbalance checks off all the relevant boxes for me: its a callback to an awesome card from years past, it forces interaction (in other words, makes me have to pay attention to the game), it gives you free stuff, and it allows for fun top-deck manipulation
Iconic Status Cards featuring popular monsters like Blue-Eyes White Dragon, Dark Magician, or Red-Eyes Black Dragon often hold their value based on cultural significance, even if they arent competitively viable
Be mindful of weaknesses If a particular deck is hammering you, look at the -EXs weakness and dont be afraid to build a scrap deck with random Pokmon that are super effective against it