Those are opportunities to upgrade your deck, and if youre on a budget, youve come to the right place
A comprehensive breakdown can be found here: The Different Rarity Symbols in Pokemon Card Sets Explained , but a brief summary: Common Japan designation: C image429599 44.3 KB image250250 1.16 KB Uncommon Japan designation: U image429599 46.4 KB image250250 726 Bytes Rare (Holo) Japan designation: R image660920 111 KB image250250 1.34 KB Double Rare (standard ex) Japan designation: RR image429599 58.4 KB image250250 2.3 KB Ultra Rare (generic full arts) Japan designation: SR (super rare) image430599 51.9 KB image250250 2.3 KB Hyper Rare (gold cards) Japan designation: UR (ultra rare) image660920 137 KB image250250 2.85 KB As for before Scarlet and Violet, the above is basically the same, except english did not have the updated star system for cards beyond ultra rares Note on Rainbow Rares The Japan HR or Hyper Rare rarity referred mostly to Rainbow cards

Clive (Special Illustration Rare) - 15 - 30 Clive illustration rare is another cute artwork with almost an Animal Crossing style of design
The most popular variant of the Esika, God of the Tree strategy is a 5-color planeswalker deck filled to the brim with both mana acceleration and fixing 5 colors isn't free!and gamestate-warping planeswalkers that can take over a Commander game fast
Darkdepths-Hexmage 3.5/10 Very quick, cheap and easy to pull of and not very damaging to your deck
Rainbow Charizard VSTAR Is Brilliant Stars' Secret Card Within the Pokmon TCG , Secret cards are considered to be any card with a collection number greater than the number of official cards in the set