1) Character demand and artwork Popular Pokmon (Charizard, Umbreon, Rayquaza, Mewtwo, Gengar) tend to command higher prices across all eras
Ns Zoroark ex is possibly the most interesting, letting you ditch one card from your hand each turn to pick up two more, and has two-energy attack that lets you use the attack of any other Ns Pokmon from your bench
It's the best rule that we have
Adding an Ogerpon card with energy acceleration would provide Grass-type decks with a major boost , and a new Ogerpon alternate art card would almost certainly become a popular chase card
For two mana, you can tap Nykthos to add mana of any color equal to your devotion to that color
There's a certain beauty to the almost tongue-in-cheek quadruple cascade, though you'll want to snag the extended art for the cleanest version of the card