Tome of Triumphant Tavern Keeping

This collection of journals from tavern keepers the world over contains numerous stories about revelry written by the people that enabled them. After you spend 12 hours reading through the book’s tales, whenever you are in a pub, inn, or tavern you gain advantage on Wisdom and Charisma checks made against the workers there. The tome then becomes a mundane item for 28 days before it regains its magic.