From publisher blurb:
Ascend beyond mastery, and manifest your will!
Take a step beyond the limits of magic, and forge your own rules. The Archmagi’s Handbook greatly expands upon the concepts of the Mana Sphere, adding numerous new ways to control the rules of magic, with new amplification talents that modify your magic, or those of your allies, as it is created; Turn fire to water, damage to healing and evil to good. Bend and alter the very rules all magic operates on until it matches precisely what you wish for. If changing magic isn’t enough, then control how magic itself is used, conquer enemy mages and utilize their powers against them, or defy the very grip of magic itself such as through the antimage archetype for paladins and antipaladins, as well as a variety of talents and feats that allow you to hamper or stop magic in its tracks.
Grow your grip over the world, and ascend beyond limits with the Archmagi’s Handbook. Designed for Pathfinder 1st edition with the Spheres of Power/Spheres of Might systems.