The fact that a mid-2000s Gold Star, a 2002 Shining card, and a 2000 Gym Challenge holo all sit in the top 10 alongside modern SIRs and the legendary Base Set variants speaks to the unique position that Charizard occupies in the market: there is no era of the game where Charizard is not relevant, and there is no era where the best Charizard card is not among the most valuable cards printed
The instances of extort can continue to stack for as many cards you have that imbue extort
Having the option of using your mana in other places gives this card huge value for responding to threats while developing your board presence
Trade the cards that you want from memory card A to memory card B, then reset the game
Cards with threshold are so much better if you have seven or more cards in your graveyard, and are usually bad or unplayable if you dont have threshold
Then theres Hydreigon ex, which looks like it came straight out of a fantasy RPG and hits like a truck in competitive play