In 8.2 when we reached neck level 70, all artifact power rewards turned into gold rewards. (Island expedition weekly, wqs, emissary, war table missions,..) It felt super good. In 8.3 we can
Where / How to Turn in World Quest (Collect Emissary Reward) - WoW Legion - YouTube
Champions of Azeroth Reputation Guide - Guides - Wowhead
WoW BfA Champions of Azeroth Emissary Location: Where to Turn in the Quest - GameRevolution