Nervosa are animate chimera born from the dreams of the mad.
These chimerical monsters are perhaps some of the deadliest foes a changeling can face. Born from madness, they can look like normal humans, animals, or alien creatures, or even have no body at all. They are all of them insane because of the manner of their creation and their actions make no sense. Their powers are unfathomable and the rules that govern their existence can change from one moment to the next.
They rarely fit any recognizable pattern or shape and refuse classification even by the madness that birthed them or the powers they may have, or how they react to stimuli. Some can even develop intelligence, becoming even more dangerous. On the other hand they may become self-aware and, fearing for their existence, disappear into the Dreaming.