So as I toy with my campaign world, I've considered rewriting some major lore to it. Mainly the "Genesis," story or at least the origin of how the characters and their respective races came to be were they are.

The idea being the campaign world is actually one that is fairly recent. Most of the races being colonists from other worlds lost in a great war across the planes and stars that has only just recently concluded. The magi of these races found a world far from the conflicts and its problems and have begun establishing themselves upon this new world. The last of the greatest of these Mages using powerful magic to shape the world into the more hospitable place it is today.

Originally everything happened on one dying world that was terraformed back to life but I almost like the idea of colonizing and setting root on a newer world. Plausibly with the ruins of alien like beings or having to face the remnants of the ancient war in the stars.