This is just a simple modification of the Floating Eye in FfH (unfortunately, I'm unaware of the original author; If someone knows, let me know so I can update it. ).
Basically, I combined the effect from the Fireball (also need the original source) with the Eye unit, and then recolored the skin (Gray scale, filled the white of the eye with red; The white in the pic is actually shine off a gray iris). It was needed for a new unit in Rise from Erebus, but I'm putting it out as I'm sure it can be used for something else (Eye of Sauron if nothing else).
Burning Eye 2016-10-05