Grading Vintage Pokemon Cards vs Modern Cards Vintage Pokemon cards are graded mainly for authenticity and preservation
The card was so powerful that it warped the entire metagame around itself, forcing players to run specific hate cards in their main decks just to have a chance
As a note, we have one Mox Diamond which needs a land to pitch and significantly more Chrome Mox, Forces, and other spells that require colored cards to exile as part of their cost
Lucario ex , on the other hand, allows us to damage Pokmon that are considered safe in the opponents Bench thanks to its unique move: Aura Sphere, which deals 100 HP of damage to the opponents Active Pokmon, but also 30 points to a Pokmon in the opponents Bench of our choice
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This approach can also be viable if you are playing a campaign with lots of potential extra weaknesses or maybe if you are playing cards with exile (I am awaiting an answer from Alex Werner)