He has already come. His name was Mohammed. His workings are not slow all in a flash. He will, indeed unify all religions through his followers if they are not stopped and reversed.
No. Islam is the religion of the Anti-Christ, and was founded by one under the influence of the spirit of Anti-Christ, but he wasn’t THE Anti-Christ.
That individual hasn’t shown his true face yet, although I do believe he’s here and is already in a position of power in a Middle Eastern country. One of the tip offs as to who he is will be that three countries out of the ten mentioned as a part of the AC’s world power will be reformed into a single state, with the AC as it’s ruler. When you see three sovereign nations replaced by one larger nation with a single man in control, that’s a pretty big sign as to where we are in the timeline.
My own advice? Watch Turkey, Syria and Lebanon in the near future.