yugioh master duel magician of pendulum deck NR PENDULUM MAGICIAN Deck MASTER DUEL

Blasphemous Act (~$0.63) is also a budget favorite and often costs only one red mana to cast

This card was given out in random packs to participants in the 2019 Pokemon Card Gym Tournament in Japan only for a very limited time, from September - November, 2019

In reality, it reached the limit, but in the now-defunct Yu-Gi-Oh Online, it reached the ban

Magic: The Gathering, Yu-Gi-Oh!, One Piece TCG, and Lorcana are trademarks of their respective owners

Finally, you can Special Summon face-up Pendulum Monsters in your Extra Deck

For individual cards and older booster packs and boxes, you will just have to gain a lot of experience and learn the nuances of real Pokemon products and then make educated purchases, ideally with a means of recourse if it turns out you were scammed (some kind of buyer protection program, etc)