Heroes of Azag-Ithiel

From publisher blurb:

Come to Azag-Ithiel, the Newlands

Play as a furnace elf, half-elf, half-orc, half-ogre, taddol, kobold, or tengu.
Visit the All-Races Senate in Paradigm, train at Fort Karaden in Khambir, or shop in the legendary markets of Low'Enath
Diversify your class training with new options for alchemists, barbarians, bards, magus, rangers, and rogues
Adventure as the oracle/sorcerer known as the Primordial Mystic or become a student of the forge.
Select from over a dozen new feats and a dozen new spells.

The fourth book that begins to explore the Lands of Porphyra in depth.