Complex sentence: Once in the Unseen Realm, Etro finds Mwynn being consumed by a force called chaos, which threatens to destroy reality: as Mwynn fades, she tells Etro to protect the balance between the worlds.
Split into simpler sentences: Once in the Unseen Realm, Etro finds Mwynn being consumed by a force called chaos, which threatens to destroy reality. As Mwynn fades, she tells Etro to protect the balance between the worlds.