Appearance: if light reflected off of emissary it would probably look something like this only the tentacles are much longer and have fractal digits. light doesnt reflect off of it though, so its invisible.
Name: Untranslateable into phonetics, rough translation would be "Beloved Flesh Emissary Unique Identifier" It is often just called "Wraith" "Shade" or to those in the know "Emissary"
Race: Wraith, an invisible intangible being that is capable of limited interaction with matter, they are not undead but many people think they are ghosts.
Personality: Emmisary has a fairly centralized nervous system like humans although the individual parts of emmisary are more intelligent than individual parts of a human, the central nervous system acts as a conductor and programmer for the body. Emmisary is curious about the world around it and the world unseen. The concept of self is more fluid than the typical human, as it has memories of other wraiths within itself and it has its own thoughts embedded in many of its spells. Despite this Emmisary believes in individual liberty and finds humans, at least, what it knows about humans from observing the spells they cast to be equal beings to itself and worthy of friendship.
Background: The Reproductive Practices of Wraiths bear some similarity to that of animals or plants, Wraith reproductive spells/organs take non-living etheric matter and arrange them into living structures that act as an "Egg" that over the course of 4 weeks organizes the etheric matter into the wraith. Unlike humans, wraiths are capable of sending not only "genetic" information to descendents but also memories. Emissary grew up in wraith society as a born scientist studying a blight that has spread throughout the etheric realm, spells with no clear purpose. Emissaries Research suggests that these etheric tumors are spells cast within the world of matter in order to animate lifeforms, while many scoff at the idea of baryonic life Emissaries theories explained the strange phenomenon and some experimental evidence seemed to support the hypothesis. Further research suggested an origin point for the blight and Emissary now is searching for the source. It has learned to work with some of the lifeforms that seem to use etheric matter as a tool, called "Wizards" or "Mages"
Abilities: I have a few paragraphs of in depth explanation of how everything works, they are all tied to the unique biology of Wraiths. A brief explanation would be Wraiths are Etheric beings that under normal circumstances do not interact with baryonic matter however etheric matter is capable of undergoing state change with the proper charge that creates "bridges" which are a form of matter that interacts with BOTH etheric and baryonic matter. Wraiths are essentially sentient spells, they can interact with magic as if it was physical. Emissary has special organs that allow it to better communicate with humans than the typical wraith. As a weakness, Emissary has very very poor senses toward non-magical things (its eyes are ethereal and as such light does not interact with them...so just as the wraith is invisible to humans, so is matter invisible to the wraith) It CAN however see spells, and through study of the spell figure out how it is effecting the material world. Spells made specifically for sensory purposes it can "hijack" to gain temporary vision. finally, Emissary can weave etheric matter into spells as an extension of the interacting with magic thing. These spells often appear less useful than spells made by humans due to the fact that humans understand matter and the world better than wraiths.
Equipment: Due to the biology of wraiths "Equipment" "Spells" and "The Body" are hard to seperate into discrete categories.