From publisher blurb:
Find the diamonds in the rough - beneath every source of power, interesting race or ancestry, or class is a polished diamond.
Diamond Recreational Studios presents Diamond Polished Spheres Dark Sphere a careful rework of the Dark Sphere as featured in the Pathfinder 1st edition Ultimate Spheres of Power by Drop Dead Studios. A Polished Sphere brings new life to this system, introducing streamlined ability text, updated, buffed, and polished abilities and effects, and brand new options to fully flesh out characters trying to live up to the fantasy the option normally offers.
Become a powerful wielder of darkness itself, bending the darkness to serve you, teleport and slice through shadows, and create crushing voids, poisonous miasma, and sensory-depriving fields. New archetypes include the Sablesavant, a holistic fusion of the Dark and Destruction spheres and the Night Terror, a shifter that lurches through the darkness to savage its prey.
Further your power over darkness with 8 advanced talents, with over 30 options to augment your existing talents, 18 feats, including 10 dual sphere feats to fuse and synergize your darkness magics with other spheres, and new alternate racial traits and character traits to fully customize your concept.
The Polished Dark Sphere is fully compatible with existing Spheres of Power options, including Spheres of Might and Spheres of Guile.
Take your games to the next level with this comprehensive tome of darkness magic.