Many of them. As pointed out in both Matthew and Luke Jesus declared that Satan would not command or cast out demons because he is too smart to divide his kingdom. Apparently you are not.
You are on shaky grounds by your own standards. All of your conjecture is either unscriptural or anti-scriptural. You cannot find any Scriptural reference to Satan casting out any demons or even commanding them.
The Reformation is securely set upon a foundation of:
as well as:
Well, either YOU are wrong or CHRIST is wrong, NL. Seems there were/are are people who were/are performing exorcisms/casting out devils and they are using God's name to perform these exorcisms. The demons depart and the exorcist believes that it is God's work. SO...the question is, who is causing the exorcised demons to depart? It's not God. He never knew these workers of iniquity. That leaves SATAN. SO...it seems Satan can INDEED cast out demons and command them.
I know you will apologize for this memory lapse of yours, that you did not remember this Scripture, which is hardly hidden or non-specific.
BTW: I included you in this D-fendr because you seem so interested in why Protestants always get things WRONG on purpose to prove that Catholics are incorrect.