For example, the priciest copy of this card was sold via Fanatics Collect in March 2021 for a cool $34,100, despite having a middling grade of 7.5 Near Mint
EX cards often featured Pokemon in dynamic poses and had a distinct foil pattern
It might be that these cards are a promotion for the first batch of Secret Lair drops to generate hype and interest in the product, and then they will go away at some point in the future
Or, you can skip all of that trickiness and just have an evasive Sliver in play, letting you attack with just one or two creatures and leaving the rest of your army back to block
After it dies, you can recur it by spending some mana and exiling cards from your foe's graveyard and then flashing it out later as needed
Multicolor-Colorless Hybrids This cycle of cards is really interesting to me as they dont squarely force you to be in a specific 3-color clan, but place a value on cost vs ease of casting