Those that are real adepts,, supposedly, can simply wish themselves in any direction of time they choose. I have played around,, if that is the right phrase, with what is referred to as "High" and Low" magic, but I haven't gotten the nerve to try what I came across in an old, as in looking old, bookstore, in Turkey, some 30 yrs. ago. Most of it was Latin, the drawing, diagrams, etc. Read like a Sorcery 101 Book but it is fun to read. I haven't summoned anything and won't until I can be sure I can send it back, without me being dragged along.