yugioh deck app Yugipedia Builder for yu gi oh card deck

There is a lot of ramp in the deck, meaning you can build a huge mana pool quickly with cards like Khalni Heart Expedition, Font of Fertility, and Omen of the Hunt

whenever the player switch between bosses, the old Records are hidden when another boss is "active" (to be replaced by the new boss' records), and the old records reappear whenever that boss becomes "active" again, hiding away the new boss' records

However, collectors may care less about these similarities and contrasts than they do about their whopping pricetags

Reddit r/PokemonTCG

@packyman has variations of all base packs and may be a good source to talk to about it