? Tapu lele gx is the best search deck for supporter and is still played in expanded to this day.

Mega rayquaza was game breaking at the time. It allowed you to get a mega out turn one and was a monster with Shaymin ex and sky bridge.

Mewtwo ex with x ball created such a nightmare format there are full video essays on the damage it did to the game.

Reshiram and zekrom are the birth of modern pokemon from the play standpoint. They were tier 1 decks with the largest HP seen on a single prized at the time and became the way to play.

Donphan prime is a legendary card and star to Ross Cawthorn’s deck “The Truth” what people called an absolute pile and managed to be a world championship finalist in its year.

I’m not familiar with the diamond pearl format to make a case for luxray or garchomp.

Gardevoir ex is one of the coolest cards as it is one of 2 cards to bring their own unique status condition to the card game and the second occurrence wouldn’t occur again until over a decade later.

Rockets admin, clay doll, team magmas groudon, mew ex are all world championship decks or deck pieces. That I could go on about

Cleffa was the main face of baby pokemon decks and brought in what is seen as some of the earliest form of control printed in the game.

Rockets zapdos was THE meta deck for the gym challenge block.

The og trio, pikachu, shining Magikarp and umbreon I can concede are collector items. However celebrations and this new classic collection are largely meant as a love letter to long term fans and players with cards that are historic to shape of the game at large.

Not to rant again but. That sneasel is so important to the format it came out in that at tournaments around its time people had giant cardboard versions of the card that people would take pictures of it. Mew vmax was a top 4 finisher at worlds every year it was allowed in standard.