The best aggro decks in Disney Lorcana tend to make heavy use of Amber at the moment, so it's also easy to transition from the starter deck into aggro play with the addition of some key cards
Lastly, while selling cards locally does lower your overhead, keep in mind that youll still have operational costs , like gas or delivery fees if youre using couriers
I learned how to read rosettes, the best way to do water tests without damaging real cards, light and blacklight testing, even rip and bend tests, until I felt fairly certain I could spot a fake were one presented to me
Most Rograkh/Kediss decks work in roughly the same way: play Rograkh on turn 1, buff it up on turn 2 with a Dragon's Mantle-adjacent effect, drop Kediss on turn 3, and then dump all your mana into buffing Rograkhs attacks
Very solid card, and great for enabling the modified deck, too
As I mentioned, mana values are based on an objects mana cost