textured pokemon cards POKEDERP Limited Full Art Gengar Card – JWillyGuy Easy Full-Art Pokemon Texture Tutorial

"Oversize cards" is not a "set" by the usual Magic definition, but I'd guess your online store categorizes them that way to make it clearer to customers they're buying an abnormal card

Note: This article shares information about the original Mystery Booster release in 2019

This is awesome against control players that play draw-go style decks, hold onto flash cards and counterspells

Graded Population Report: Tonberry #122 Visualize the distrbution of grades in the chart

If they don't know your strategy, you could try and fool them, or just pick three super-cards and watch them struggle to guess which one is least dangerous