Generally, newer cards in excellent condition or older, rarer cards are your best bets
If you don't have fire energy attached to your Mew, you don't have to discard anything
Once the color sorting is done for all of the above, rarity, type, alphabet, just like everything else
Like most fantasy games and worlds, the buy-in requires a ton of suspension of disbelief, and breaking that tension every now and then is a natural human response

They look as follows (the dagger marks signifying the fact that it is impossible to tell the beginning and end of the sequences): Nidoran m, Diglett, Abra, Fire Energy, Starmie, Ponyta, Fighting Energy, Koffing, Pikachu, Doduo, Fire Energy, Gust of Wind, Machop, Lightning Energy, Gastly, Ponyta, Tangela, Grass Energy, Squirtle, Voltorb, Psychic Energy, Sandshrew, Weedle, Rattata, Water Energy, Drowzee, Poliwag, Fighting Energy, Charmander, Potion, Onix, Lightning Energy, Koffing, Magnemite, Psychic Energy, Pidgey, Abra, Metapod, Water Energy, Diglett, Staryu, Fighting Energy, Caterpie, Switch, Vulpix, Fire Energy, Voltorb, Machop, Grass Energy, Poliwag, Nidoran m, Rattata, Lightning Energy, Gastly, Doduo, Psychic Energy, Tangela, Sandshrew, Bill, Fighting Energy, Vulpix, Squirtle, Fire Energy, Pikachu, Bulbasaur, Drowzee, Grass Energy, Onix, Pidgey, Lightning Energy, Staryu, Charmander, Metapod, Psychic Energy, Energy Removal, Magnemite, Water Energy Poliwhirl, Maintenance, Farfetchd, Ivysaur, Pokmon Center, Machoke, Jynx, Full Heal, Kakuna, Double Colorless Energy, Porygon, Charmeleon, Maintenance, Poliwhirl, Raticate, Pokdex, Nidorino, Magikarp, Professor Oak, Magmar, Pokmon Flute, Porygon, Haunter, Energy Retrieval, Seel, Dratini, Double Colorless Energy, Growlithe, Wartortle, Full Heal, Dewgong, Defender, Kakuna, Magmar, Pokmon Center, Raticate, Seel, Revive, Nidorino, Kadabra, PlusPower, Dewgong, Super Potion, Arcanine The length of the sequences (77 and 44) which add up to 121 cards are too much of a coincidence to assume anything other than that they were printed on one single sheet and then separated before being inserted into packs
