From publisher blurb:
Unlock a multiverse of new martial power!
The Codex of Blood: Parasites & Paragons further explores the martial initiator system introduced for the Pathfinder Roleplaying Game by Dreamscarred Press. Hunt across the planes as a parasite or ferine sentinel! Or join the divine battlefields as an everglory or steel valkyr! This book can stand alone or enhance campaigns already using other martial classes!
The Codex of Blood Features:
The Parasite - A new base class that saps the strength of foes. Builds deadly animus throughout each combat unlocking new powerful abilities! Drain and debilitate the enemy continually evolving as you vanquish your foes!
16 Archetypes allowing martial abilities to apply to base classes like magus, bloodrager, or skald. And archetypes for popular third-party classes like time thief and valkyrie.
3 New martial disciplines - Unlock new options like the savage grappling of the Brutal Crocodile, the debilitating strikes of the Leaden Hyena, and the overclocked artifice of the Mangled Gear.
Dozens of new feats for initiator characters. New occult class content.
Seting info for the City of 7 Seraphs to allow the new content to be fitted into ongoing campaigns in Hyraeatan.
Reference to allow a greater range of playability to those who don’t have the original martial initiator products.