From publisher blurb: Unobtanium! Strange substances that defy the laws of nature are a staple of sci-fi, and your heroes can tap into their mysterious power! Explore over a dozen new class features tied to these eldritch elements with Aetheric Scion alternate class features and Planar Maneuvers like aetheric capacitor, flauros infusion, kinetic revival, and aetheric jaunt!