One Piece OP09 Emperors in the New World Booster Box Rules Text: venture, into, the, dungeon, 39 cards Magic: The Gathering Once Piece Card Game: Emperors In The New World Booster Pack Hot Topic Rules Text: venture, into, the, dungeon, 39 cards Magic: The Gathering BANDAI One Piece OP 09 Card Game Booster Box, Japanese, 24 Packs, 6 Cards per Pack Walmart.com I'm lost with these dungeons, undercity has info on the back while one doesn't. How do they work? Even start going into rooms and all. For reference here is my commander and