Depending on where you plan to sell bulk Pokmon cards, you might need to adhere to specific rules, such as each pile having X amount of cards or each pile must have X amount of commons, uncommons, and rares
[When Digivolving] Delete all of your opponent's lowest level Digimon
Then later, I can Special Summon ones with the same attribute from my hand or GY
Speaking of repeatable value, Professional Face-Breaker is one that I feel is practically an auto-include in most red decks at this point if youre playing with creatures
Finally, material aside, environment matters a lot for long-term safety, so keeping toploaded cards away from high heat, humidity, and direct light will do more for preservation than overthinking the plastic label
Navigate the twisting passages of Ravnica and uncover hidden power with the Dragons Maze Draft Booster Pack