Activated abilities have discrete effects that can be set off when and how you choose, but usually require you to pay a cost first
A card from Chibi Godzilla Raids Again will also make its appearance
(You could argue Brilliant Stars is the more over-all valuable set, given the number of over $20 cards in there, but even its alt-art Charizard V doesnt quite scrape the $200 mark.) These are, of course, their ungraded prices, with numbers vastly increased if sent of to companies like PSA to receive a grade, especially if they can achieve that all-conquering PSA 10
You can obtain the Mega Blastoise ex (4-Diamonds rarity) card by opening Crimson Blaze from Crimson Blaze set
It evolves into Zoroark a large and strong Pokemon capable of creating illusions that are indistinguishable from reality
Decks in these formats can cost thousands of dollars, and the formats are kind of designed for veterans of the game