A series of high-profile bans happening with far more regularity than they ever had shook the format, creating metagames that frustrated a lot of players
It seems like players are planning to use Nantuko Shrine in the 99 as a backup for Slime Against Humanity, causing the spike, although in reality, the fact that Nantuko Shrine is like 25 years old and has never been reprinted certainly plays a large role as well
The Heavy Ball's catch penalty now affects Pokmon that weigh under 451 lbs (which most Pokmon fall under), while only four more Pokmon are available over the originals that are affected
Black usually has other avenues of removal through other Digimon effects, meaning Iron-Fisted Onslaught is a bit underpowered by today's standards
Thats a recipe for a meta thats ready for this card
For more Pokmon price stories, check out the most expensive rare Pokmon cards, to see how truly silly these prices can get