There are many reasons one might collect cards from the Scarlet & Violet era of the Pokmon TCG, first and foremost is the Terastal phenomenon, and return of 'ex' cards which adds a new, unique strategic consideration to the playing card game
A Wrath effect that involves keeping your biggest creature
Thats good, but this also has some removal
Mega Brave & Mega Symphonia mark the return of Mega Evolution Pokemon, with Mega Lucario and Mega Gardevoir featuring on pack arts for their respective Japanese sets
The most valuable cards include 1st Edition Base Set holographics (especially Charizard), Shadowless prints, Gold Star Pokemon, Illustrator Pikachu, Trophy cards, Japanese exclusive promos, and modern chase cards like Alt Art and Rainbow Rares from recent sets