hisuian samurott pokemon card TCG [DDD] Shadow Slash (180) Discard an Energy from this Pokémon Pokemon Card Game/[S12a] VSTAR Universe]Hisuian

Its an excellent source for competitive decklists and data on what works well

If you're strictly looking to increase the dollar value of your card in hopes of selling it, PSA is still your best option

You can tell in your card library which is a Promo by the Pokeball symbol on the lower right side of the card's image

Additionally, Wizards removed six cards from the set that did not meet its modern design philosophy, and a few cards have updated flavor texts

Additionally, the set features the Champion mechanic, allowing certain creatures to gain bonuses by sacrificing other creatures, further emphasizing the importance of building and maintaining a strong army