Elemental Vessels

Long ago, gnome artificers and specialists from House Cannith discovered and developed a means of magical travel. The heart of the process is a set of techniques for binding elementals that uses Khyber dragonshards. This closely guarded procedure requires delicate engineering, arcane skill, and rare materials from around the world, and different workshops employ varying esoteric techniques. Building a new vehicle can occupy a workshop for months while magical energy is painstakingly inlaid into the vessel's hull. Such work is a complicated task requiring the labor of many; it is not something that can be undertaken by a lone wizard for any amount of compensation.
The construction of elemental vessels requires the use of two kinds of dragonshards. A Khyber dragonshard of the largest size and finest quality is required to bind the elemental to the vessel, and a Siberys dragonshard is needed to craft the vehicle's helm. Production of new vessels grinds to a halt without a steady supply of both kinds of dragonshards, and a workshop with an order to fill will pay a handsome fee to adventurers who can find them.