Hard to tell if it’s actually crackling or if it’s just art interpretation of the glow. I think it’s the latter.
And concept art always looks more interesting than the final product, because drawing lets you get crazier than what camera/sets/props/actors/budget can. That pic is basically what happens in the movie, just not as cartoonish.
Did you not continue to the other pics? nothing like that was in the movie. They actually go inside DSII and fight.