If Black and White were your first Pokmon games, then you'll doubtless be excited for the next TCG set
When I first wanted to handle this challenge, I figured that 15 of each non-land and then 40 lands would make sense
As these cards are only awarded to the top performers in tournaments, they can provide a sense of accomplishment in addition to looking impressive
For a more specific example, lets say you control an Etherium Sculptor and want to cast Mishra's Bauble, but your opponent controls Aura of Silence
Chart shows the price of Mega Gardevoir ex #178 at the end of each month going back as long as we have tracked the item.
To tell if a Pokmon is valuable or rare, always check for rarity symbols, first edition stamps, holographic patterns, and special designations like SIR or alternate art