Spell animations through lighting effects

I had an idea to upload custom animations to the token light effects to be able to add depth and texture for an animated aura spell and similar things but I'm incredibly new to XML. I'm also not sure if the token light animations are source code and would be masked or not, like line of sight is. Any and all insight, suggestions or ideas would be much appreciated.

animated tokens will be available next month sometime.
these might (or might not) be an easier way of doing it