Standard Pokmon cards are manufactured to tight specifications, and even a millimeter or two of deviation is a red flag
So whats it doing on this list then? Well you see, it has another cost in addition to the mana that you have to pay. And that cost is
The Difference: Our sleeves offer unmatched resilience , resisting bending, tearing, and corner splits, keeping your valuable cards protected through hundreds of competitive games
Still, nope - it was an anti-meta Dragoon Subterror deck
There are actually astonishingly few threats in the current Modern metagame which survive Unholy Heat, and a lot of play patterns are defined by the existence of this card
Put the counters on Sage of Hours, and then immediately sacrifice them all with its ability to get an extra turn