@JeremyECrawford does Expertise stack with Natural Explorer? If it does, what's the resulting bonus, x3 or x4?
— Thiago Rosa Shinken (@true_shinken) September 11, 2016
See the rule on using your proficiency bonus (PH, 173). You don't get to double dip. #DnD https://t.co/B7QLcSYWvq
— Jeremy Crawford (@JeremyECrawford) September 12, 2016