Eos

Eos' rich history has been sundered into three eras, each split by a cataclysmic event: before Thos, the Thosian Era (or before Moonfall), and after Thos (or after Moonfall).   Magic has always been rich and varied on Eos. In the ancient era, there was only will-based magic, though different groups of people channeled it in different ways. The Eysurian Empire spanned continents, bridging different cultures together but allowing them to remain largely distinct. Then the Imperial Sages sensed disaster looming: an asteroid on a collision course with Eos.   They developed a plan. If all of the Empire's mages channeled their power together, they could divert the asteroid. And it almost worked; they diverted it enough to miss the planet, but it was drawn into orbit, and the new celestial object in orbit around Eos wreaked havoc on the planet despite the net of magic cast around the new moon. A net that also changed magic in Eos, creating a magic controlled by gestures more than by will and causing repeated use of the same magic on a body to change it permanently over time.   The world adjusted to the changes as the era sped forward, advancing magically and technologically, but the new moon (named Thos) was in a retrograde orbit. Fortunately before colliding with the planet, it collided with the next smallest moon, Tyrios, shattering them both. This caused a different sort of cataclysmic disaster. The physical magic fueled by the net around Thos dissipated, and groups of people who'd become dependent on it were left without power. Rock rained down on parts of the planet, and the world strained as the pull of gravity on it shifted.   But this too passed, and Eos flourished. Somnion, a continent that had become completely dependent on Thosian magic, was left without any magic at all and developed technology at a frantic rate to compensate. The other continents were dissuaded from overpowering Somnion because their own power was dampened almost to complete uselessness on Somnian soil. A vibrant trade emerged. And civilization powered forward.