The Cosmere at Large - Aether of Night

Aethers are another bonded type of magic where there is a magic user who is bonded in some way to a force of investiture. I would say it's more like a spren bond than a mistborn misting you're born with it type thing. It definitely has spren bond vibes maybe a little bit too of the seion vibe because you can bond a seion it just doesn't do anything orYeah we don't know what it does yeah but like that type of use of magic system is how I see this being incorporated into the Cosmere at large.