The Isle of Dragons (2020)

From publisher blurb:

Dragons served as the elite soldiers of the Gods during the Schism. When the cease fire was ordered, the gods Chandra and Ragnar gave the surviving magnificent wyrms a domain of their own to rule with absolute power — the Isle of Dragons. Some dragons saw this as a blessing, free from the conflicts pursued by other beings. Others saw this as a curse, trapped and prevented from pursuing their own schemes. The Isle of Dragons is a massive island south of Madrea and Gianthome. Each flight of dragons control a fraction of the island as their own territories, but all refer to the reds as the de facto leaders who seized power by absolute strength through fire and claw. In this book, you will find all the information you need in order to bring the Isle of Dragons to life in your Odysseys & Overlords campaign. You will find information on each dragon types’ territories and the leaders of each group, other inhabitants of the isle, and the massive hoards of treasure the dragons keep, if you are brave enough to find them.