The Use (Changing Magic Book 1)

The Throne of the High King stands empty and so are the nurseries of the High Court Elves.
A solution to both must be found before the magic of the Empire fails.
Eioth, Lord of the North West, has found a very odd book sitting openly in a library. The Use and Complexity of Sex Magic is a scholarly study of that most obscure, frequently derided and almost unknown branch of magic.
For an Elemental Scholar of Eioth's rank and ability the exploration of Sex Magic begins as a simple exercise in curiosity ... soon it may become the solution to all the problems of the Empire.
But first he needs to find one special woman.