holographic playing cards 2 DECK LOT Limited Edition Prism Glow In Dark Card Deck Sets You can choose from the red Legal Tender Luxury Playing Cards

Ive seen this rarity on the following cards thus far: RDS-EN035 Dark Blade the Dragon Knight

Just a cosmo holo

These cards are identified by a black star symbol with the word PROMO written across it, hence why theyre also called Black Star Promos. The demand for these cards varies, mostly depending on how difficult the Promo was to obtain or how popular the featured Pokmon is

Maintaining the Scarlet & Violet example, a regular Booster Pack from that collection has a pull ratio of 4 common cards, 3 uncommon cards, and 3 foil cards (at least one of which will be rare, ultra, secret, or, hyper rare)

This makes the math easy to figure out

It doesnt get much better than this