Age of Dragons

The next age of the world is typically known as the Age of Dragons. With the Great Old Ones rendered powerless, dead, or imprisoned, elemental and primal dragons arrived on Boros, likely from the Inner Planes, and defeated the remnants of the prior nonhuman races and took the land for themselves.
Very little is known of this era. It is believed that the division between chromatic and metallic dragonkind originated during this time and led to a conflict known as the Dragon Wars. Both great lizards as well as serpent-folk were either brought to the world or bred by the great dragons as food or to fight battles for them. And toward the end of this era, giants are said to have arrived from Jotunheim to fight the dragons for dominion over the world.
There is no agreement as to why this era ended, though it appears that the dragons and giants battled among themselves until they were all driven to the corners of the world. Into the vacuum came new powers, the first beings known as gods. And toward the end of this age, humans arrived on Boros. As to the origins of humans, the diversity of stories and legends are impossibly inconsistent. Some say that humans were already here, in hiding, and that the gods found them and brought them out of the darkness. Other religions claim one god or another created humans. Whatever the case, humans began to spread across the continents of the world.