From the back of the book:
"This player's companion expands the scope of Arcana Evolved by offering an array of of new character options for every class. Customize your PC to a greater degree than ever before. You can infuse your spellcaster with the power of air, acid, or fire magic. Or bolster your oathswordn with abilities to match his oath. Perhaps you'd like to transform your warmain into a might ironmain. Plus try out six evolved classes, hundred of new feats, and Tylonian crystal weapons and armor that respond to your character's wishes.
Take your first steps down the new paths of evolution - it's time to transcend the limits! Transcendence is suitable for characters of all levels."