I extracted the texture of Hand of Freedom's model from WoW MPQ, converted it, and used it to make corresponding model in War3 Model Editor, using Unholy Aura as base model, and added Purple Glow to it. I hope I don't break any rules. Credits go to Blizzard. I made it for my map anyway.
EDIT 22.01.18:
Now the glow uses new geoset, with smoother animation, nice scaling, and the texture is more visible, the alpha animation is removed. Exactly like I wanted it to be in the first place.
Also included screenshot of how it is ingame
Update: added deatj animation
update 08/07/23:
- added birth animation
- fixed errors by sanity check
- in birth and death the aura disappears instead of scaling