Now I want a sandwich....*acquires Dark magic* WITH THE POWERS INVESTED IN ME BY THE DARKNESS OF THIS REALM I MAKE THIS SANDWICH!!!! *stares blankly at a loaf of bread and other sandwich related ingredients* Or I can make one like a regular mortal... *sigh* Great art btw Here have an amzaing dancing sandwhich great art! :3
It's obviously not an illusion spell. It clearly changes the Crystal Castle into its "evil" state like it was under Sombra, powers up the Nightmare Door, and besides, Sombra's horn glows like that whenever he casts a spell and I'm pretty damn sure he doesn't use illusions.