It is not necessary for each save to trade an equal number of cards, nor is it necessary to leave one save with enough cards to build a Deck
Johto Gym Leader Morty makes an appearance in an SAR card, depicting the Ghost-type specialist beside his signature Pokmon Gengar
there are even weaker monsters that would easily wipe the floor with Arceus, simply because they are so powerful
However, it's a bit lacking in card draw aside from the frog itself and dsk-220-kaito-bane-of-nightmares so it can occasionally stumble or run out of answers
Ive been on the hunt for a foil French Murder for a while, and as yet, have had no luck
Three Star cards have just over a 1% chance to appear in packs, but only one is available in each type of pack