Korean monster book, new cards?

I assume you're asking what cards are not in GMS yet?

If so, Yeah, all the monsters in Mushroom Castle including the 3 different yeti and king pepe have cards. Also Lienne has 5 monsters with cards, plus the Embarrassed Ghost Stump, Angry Zombie Mushroom, and Poisonous Green Mushroom cards. Balrog boss and the 3 world-tour-turned-area-boss cards too. So yeah, quite a few will be coming down the line though maybe not for a while.

That's interesting then. By the way, how's the level limit working officially on mushroom castle now? Like, for King Pepe, quests, monsters, etc.