Not only that, but they also spread onto the competitive scene a few years back
To put it simply, it's the greatest, and most extreme "win more" card
Finally, the ultimate isn't even good all the timeif you are winning and have a decent board, you might want to keep your own permanents rather than take your opponent's, especially since Aminatou, the Fateshifter is more about synergy than raw power, so your cards will likely be more valuable to your deck than your opponent's cards
There's no limit to the number of trainer cards you can have in your deck, but around 20 is usually a good amount
Haban Berry From Terastal Festival If the Pokmon this card is attached to is damaged by an attack from your opponent's [N] Pokmon, it takes 60 less damage (after applying Weakness and Resistance) , and discard this card