So I know I've told a few people, and pretty sure it was mentioned in my other post where he's using his aura to help the viewer, but Naz has an ability to use his own energy to create a healing aura. Unlike in games where it usually uses a form of Mana (or Magica in the Elder Scrolls series), Naz's ability has the potential to drain his energy level to the point of loss of consciousness if he pushes himself past his limits.

One key thing to look for to know if he's tapping into this ability is his eyes, even if his hands are not emitting any light he may still be channeling his energy, in this case his eyes will still put off a slight glow of their normal color (a greenish-yellowish glow). The glow is actually because not only does he generate a healing aura, but because it will give him a 5 feet radius of sight. This can be very helpful considering Naz is actually blind from an attack, so it gives him just enough sight to be able to see what kind of a wound he is working with and know when it's healed.

Fun fact, this picture was once posted on my older account, but I decided to go back and do some editing with some of my newer found methods since the PSD for it was recovered, and I personally like the difference heh! The older version can still be found on my old account >here< for comparison. ^-^

NOW, giving credit where credit is due!
Ayanaki did a lot of work on this as well back when we originally made it, her and I collaborated on it but the original sketch was by her.

Another small fun fact, yes those are an extra set of arms, although he's technically a bat what were supposed to be wings did not develop into wings but rather an extra set of usable arms!