what does ex mean on pokemon cards Pokémon Cards: Parents Need to Know Pokémon ex (TCG) - Bulbapedia,

The most expensive cards in the set that have high prices based on their playability alone, and not the result of chase art or foiling process, are Abhorrent Oculus

A rare appearance by Countersquall in Game 3 as Chapin picks up the pace in a plodding control mirror in danger of hitting extra turns

The mystical MTGA codes, once unlocked, won't replicate their treasures no matter how many times you whisper it

While some of the promo cards are presented in the same fashion as the rare one-star cards, they do not have a rarity since they can't be obtained through normal packs

Proxy cards are only allowed in certain situations such as replacing a damaged card that was already in the game