"Prevent all damage done to this Pokemon by attacks from Pokemon-GX and Pokemon-EX during your opponents next turn" - this in itself is incredible against a fully stacked Zoroark GX, Gardevoir GX etc in the first place - but take into account that it can be situationally used in conjunction with the Bonnie 103/131 or 128/131 trainer card which actually allows the GX attack to be used again if played correctly
This comes into play with cards like Ugin, the IneffableUgin, the Ineffable, Glaring FleshrakerGlaring Fleshraker, Ancient StirringsAncient Stirrings, All Is DustAll Is Dust, Mystic ForgeMystic Forge, and Forsaken MonumentForsaken Monument
Then search no further
That means that until we hear otherwise, it seems as though the Mythical Island set will be part of the game indefinitely, with players able to open packs regularly
Part of the reason Im being a stickler about this distinction is that there are actual MTG rules about what it means to move a counter, and some niche interactions pop up when you compare moving counters to removing a counter from one thing and putting a counter elsewhere. I can also see a future where we get rules text that references whenever you move one or more counters, which would require precise text on the card
