Heroes of Azag-Ithiel (2015)

From publisher blurb:

• 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.