The Nature of Magic (2006)

From the back cover:

"The Nature of magic explores the world of Rivium like never before. This is the first major expansion to the CrossRoads of Eternity RPG system. This 260 page book puts all the arcane powers of creation at your fingertips, and the only other thing you need is the mettle to test your will and learn the ancient arts which pit one man against another, one nation against it's neighbor, and mortals against the Gods.

Explaining the rich and complex world of magic in great nuance, the book then delves right into new content, expanding the magic system of the Core Rule Book by almost 300% with over 500 spells, 12 distinct magical disciplines, 3 new character trades, and a full spectrum of new rules and elaborations.

The world of magic is yours for the taking, and the knowledge of the Nature of Magic is the key."