When I see this one, I think of an "ancient depiction" of the Emperor.
A saint or angel gazing into a golden "power crystal." Probably an atomic reactor in Warhammer 40k.
I love the scale of this angel. She's "battle damaged" and the folds of her robe make a little "bunker" where troops can take cover or snipe at the enemy. Hiding in the base is Sgt. Telion.