Sometimes, a texture's usefulness may outweigh the fact that the skin is a recolor/copy-paste work. In this case,
moderators will note that the texture doesn't fully adhere to the rules, but is approved due to it's usefulness/demand.
I on the other hand, do-not think this is 75% freehand.
Even tho, as The Panda pointed out, recolors can be accepted if they prove to be extremely useful (which I fear it's not the case in here as there's already a Nether Drake model doing this much more effective for a Nether Phoenix), this recolor is oversaturated and surely won't fit well with ladder resources.
If you were to tune the purple's both lightness and saturation down, it would be more impressive and look a lot better.
Still not sure would it be useful enough, as you can't recolor the flames via texture unless you mess the other textures up (which messes up some other effects up, causing domino effect) or the model itself.
If the skin was based upon that WoW reference, at least some effort could be put into additions such as helmet and body armor
In my opinion, this skin is useless even if you plan on purple EXCLUSIVELY team color, unless you plan to get a custom model for it to remove ribbons. Red and magenta purple don't really go in any way well together.
Not being hard btw, or having something against recolors, it's just the truth.
By looking at the screenshot, I can wordlessly explain why do I feel it needs a lot more work.