WTF Konami is doing!
They nerfed GEMS.
They nerfed Sylvans.
They nerfed Fur Hires.
Why do they release too many BOXs then start to nerf it??
This is so frustrating.
It's not about what Konami releases or even how many; it's about what the playerbase chooses to do with what they have. If they decide to abuse it, this is what happens.
The more cards they add to the game, the more that need to get nerfed because the speed format makes or breaks many decks, and at the rate of adding cards for periods of time, some archetypes will reign supreme simply because they are more advanced than anything else to date.