MP cards make a jump to $20 (though there is an erroneous sale at $47), while LP cards typically trade in the mid-20s, followed lastly by the rare NM copy which can sell for almost $50
To win you need said creature to have 20+ power, and that can be a lot harder to manage
Does the card have the number of elemental symbols in all the correct places of the card
Expert analysis requires learning the underlying systems of the game, including mana costs, rules text, card templating, and beyond
Reservations on weekends and national holidays (such as golden week) are even trickier than normal
After you get past figuring out how to make the technology work, you want to figure out how to design it such that it's the most appealing and aesthetic to its user that it can be