The TYPE-MOON Wiki's article on Magic loosely defines the first three of the five Magics, but has very little detail on the Fourth and Fifth (and the First is a bit vague). Notes implies that there is a Sixth Magic, but I have no information on it.
This thread is here for speculation and discussion on the nature of the undefined Magics, and characters and items relating to them.
This thread is here for speculation and discussion on the nature of the undefined Magics, and characters and items relating to them.