Youll find key cards, gimmicks (hello, Terastallization), standout designs, and the stuff that makes collectors foam at the mouth
Groudon CL can also discard several cards from your opponents deck, but other factors, such as a high Energy cost and a risk of the attack backfiring, prevent the card from being playable
You could also go down the group hug route with cards like Rites of Flourishing and Ghirapur Orrery
What usually happens is that when developers start working on a new generation of hardware, they update their game engine (at least, the good ones doIm looking at you, Bethesda) for better hardware
Photo courtesy of our friend @DJGigabyte
They can be played during any part of your turn, and, if set, during your opponent's turn