3 Books Found

Based on your description:

"A young boy-magician corrects an old man-author, then the old man goes to a coffee shop that gets burnt down by this evil sorceress lady who is also out of the young boy. The young boy had been living by himself for a while and has been in contact with the Egyptian god Isis. The young boy and old man meet again; trying to get away from the sorceress who is pretty much unstoppable. The young boy tells the old man about Egyptian magic then sacrifices himself by putting himself in a figurine to save the man. The man stays in contact with the boy through dreams"