Red often discards cards anyway, as we see with Thrill of Possibility, Faithless Looting, and Big Score
Earning a promo is quite competitive, though, and even if you win all of your matches, you still need to win a game of Janken (rock-paper-scissors) to determine if youre lucky enough to get the top prize promo
Every turn brings one more red mana than the last
And thats the white cards
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
Japanese sets that go out of print have historically seen their sealed box prices appreciate significantly sets like Eevee Heroes and VSTAR Universe are trading at multiples of their original market price years after release