They just get less prominence then they used to when we only had three major releases to worry about
Tera Pokemon also cant be hurt while on the Bench (which is to say, in play but not the currently Active Pokemon) and will often have a powerful ability in the Charizard exs case, you can search your deck for up to three Fire Energy cards and then immediately attach them to any of your Pokemon, in any way you like
Corkscrew Dive only needs one energy and does 100 damage, and as a secondary effect, lets you draw cards until you have six in your hand
Aether Vial Aether Vial is a key piece in Modern and Legacy Death and Taxes builds, letting you sneak creatures onto the battlefield for freejust match their mana value to the number of charge counters
There's also no way to play with them once they're finished, so they're very much a collector's piece
Each card a player draws from their deck represents a magical spell which can be used to their advantage in battle