The rarity system, card art, and set structure are nearly identical the main difference is that physical JPN cards offer texture, collectibility, and real-world value
Deadly Rollick is very expensive, however, which may give some players pause
Lilah, Undefeated Slickshot is a blue and red 3/3 with Prowess, which means they get +1/+1 whenever you cast a noncreature spell
While that limits you to playing this deck highly Team Rocket focused, reaching that threshold shouldnt be a huge issue as Pokemon card search isnt exactly lacking in this game
Its ability to generate three mana for free is the most powerful acceleration effect in the game's history
The problem with fan-made formats is a matter of support