A few reliable formulas cover most cards: Raw single: Card Name, Set Name or Code, #Collector Number, Foil or Non-Foil, Condition, MTG
Wizards of the Coast cannot change the standard back of paper Magic cards, with double-faced cards being a category of their own
Another deck I have been testing is an old favorite: Gardevoir-GX, but with a few techs and twists to help the deck compete with the insane speed of Buzzwole-GX
Or even to your plan against decks with powerful two-card engines, where you need to try and put them on the fastest clock you can early, and then time your discard spells to keep them stuck on (at most) half a combo
This means that there was just a two-month window during which this card could be obtained
Having played this a bit, I can say it's not good