The Waterdeep Trading Company has always understood that wealth drawn from the land must be returned in kind. Yet as the company’s reach expands beyond Faerûn, into elemental planes, shadow markets, and the drifting isles of air, a new challenge has emerged: how to measure and restore what is taken from other planes of existence.

From the first enchanted ore shipment mined in the Plane of Earth to the bottled winds imported from the Plane of Air, planar trade has quietly altered the balance b...