The Dragons Teeth

An arpeageo world not long after the war between the giants and dragons. Water levels rose significantly after a portal to the elemental plane of water was opened at the end of the war. Leaving only the mountains and highlands of the old world. Seven hundred years later the "dragon teeth islands" are populated mainly by dragon-born civilizations. Wyvern heavy cavalry, and Ahool (giant bat) light cavalry is the pride of the population, with mountain goats as the main form of land travel, and a trade focused navy outfitted to house their flying companions. Their main skirmishes and trade wars occur between the mostly nomadic giant kin such as ogres and trolls, many of which are pirates. But an ancient undead fey is searching the depths of the seas for the bodies of dragons and giants of old to resurrect.