Ok, thanks to you ***noxiart***, that first screenshot was it, though it was not the actual effect I was hoping for. That thread reference was useful though. I have been playing with it and modifying it, as I am convinced you can get a halo effect with the right combination of shader nodes - now more than ever. Here's a screenshot of what I have achieved so far. I have been working on the glow in this wraith's eyes. I am so very close, and there is some amount of rendered color bleed between the red of the eyes and the white of the face, though very hard to notice (only a few pixels here and there).

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