HP can help identify fakes : If a card has an HP value that doesn't match any known printing of that card, it might be counterfeit
Basically, once you get into Gold Star territory, youll know youve got something pretty special on your hands
However, promo cards are also prohibited from being used despite many of them still meeting the eligibility requirements
So even though it does seem expensive for Giratina to only be able to do 30 hp to each Pokemon of your opponent's for 4 energy, just think if your opponent has 3 Pokemon in play, 1 active and 2 benched, 1 turn of Darkness Lost can do 90 hp with 4 energy cards, which isn't bad at all
Add Bulbasaur, Charmander, and Squirtle to your team as playable foil promo cards, then work on completing your Kanto Pokdex by opening more booster packs from the special Scarlet & Violet151 expansion