There are several low-effort things you can do to ensure it doesnt become a pile again
The English set Stellar Crown, for example, can be broken down into the following rarities: 87 Commons 39 Uncommons 15 Rares 14 Double Rares 13 Illustration Rares 11 Ultra Rares 6 Special Illustration Rares 3 Hyper Rares 3 ACE SPEC Rares (for a total of 191 card types) Meanwhile its Japanese equivalent, Stellar Miracle, contains the following: 48 Commons 34 Uncommons 9 Rares 8 Double Rares 12 Art Rares 12 Super Rares 6 Special Art Rares 3 ACE Rares (for a total of 132 card types) Printing Foils and Variants Pokmon International cards on TCGplayer tend to have two distinct foil types compared to their Japanese counterparts: Holofoil, and the English exclusive Reverse Holofoil
A tube or sleeve is ideal for long-term storage
After Standard rotates, some of the cards will see price drops, but some of most expensive cards from the set stay at the top, like The Immortal Sun from Rivals of Ixalan or Finale of Devastation from War of the Spark
If this card is Ritual Summoned: You can destroy as many face-up monsters your opponent controls as possible that were Special Summoned from the Extra Deck, and if you do, inflict 1000 damage to your opponent for each, and if you do that, this card can make a second attack during each Battle Phase this turn
