This is a very neat effect and it looks great, but I feel I have to ask:
As much as I of course want a holographic Charizard, I'm really not fond of sparkly foil effects on... anything. Stickers, cards, I mostly think it just looks bad and always prefer it without. Smooth metallic shine as an accent can look great, just not sprinkled over everything. Am I alone in this? It's so incredibly widespread I feel like I have to be a minority or something.
I think trading card game art has a ratchet effect. Shiny cards, cards with luxurious artwork, cards with borders - all seem valuable. And worthy of purchase! Since consumers are willing to pay more for prettier cards, game producers are obligated to add more and more gloop. Eventually almost every card has some kind of "thing" happening. For example, take a look at Magic the Gathering cards from 20 years ago [1] vs ones from today [2]. Today's cards have more gloop.
[1] https://gatherer.wizards.com/sets/7E
[2] https://gatherer.wizards.com/sets/EOC