Maybe only one of many. Remember Satan is a created being, and therefore doesn’t know everything. So he has had to have an anti-Christ ready in the wings in case the end comes. Now Satan knows the Scriptures better than most Christians, so he knows his time is getting very short. Things are going to get really rocky from now on.
Way off topic, but kinda along these lines, I lost my best little buddy doggie in March. We walked every morning for years, rain or shine, and he demanded stick throw, fetch and tug. I still walk every morning, and I figured that God, being all powerful, can have me simultaneously "there" throwing sticks, and "here." So doggie is still entertained, and I still have him in my heart. We are both in two places at once - maybe more.
Reality is weird enough on it's own (I study physics for fun), and whatever God has cooked up for meta-reality is going to be beyond stunning. We don't deserve any of it.
Okay, off my soapbox.