yugioh combo decks Supreme King Z-Arc Deck What's strange about this Yugioh

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As you pointed out, the difference between Pokmon EX and Pokmon GX is that the former ones are always Basic whereas the latter ones are always the stage they are supposed to be [1] (except for Tag Team GX cards which are also always Basic)

There are a couple of different versions to be collected, including a Secret Rare card with rainbow coloring, though this card is even harder to find than the Friends in Galar Trainer card

SR Super Rare UR Ultra Rare SE Secret Rare UL Ultimate Rare PS Platinum Secret Rare CR COLLECTOR'S RARE QCSE Quarter Century Secret Rare Forbidden Forbidden Archnemeses Protos X DARK Level 11 [ WyrmEffect ] ATK 2500 DEF 3000 Cannot be Normal Summoned/Set

But it also has a couple of other keywords - mostly Convoke and Delve