From publisher blurb: The necrogenesist takes a different approach, compared to most necromancers. While many rely on spells and other magics to animate their creations in a comparatively simple manner, necrogenesists study the state of undeath on a fundamental level, learning to take hold of raw negative energy and build upon it. While they lack the true breadth of capability that most spellcasters have, their creations, by comparison, are forces to be reckoned with. The Necrogenesist contains: •A new, experimental “necromancer” class with its own creation system, compatible with the 1st edition of the Pathfinder RPG. •Dozens of options to customize each character and their creations. •Favored Class Bonuses for a large number of races. •New feats for the class and for others that wish to dabble. •Options for Spheres of Power and Spheres of Might (by Drop Dead Studios).