Courage

The Eternal Courage is one of 12 prime beings created by the Fayett to take over their original task of watching over Haien'Echti. He is responsible for Destiny's maniacal rampage.

Pre-Fractured Planes
During the time before the Fractured Planes subplot, the Eternal Courage urged the seven most courageous heroes of the world he created, Aznala, into conquest of other worlds. They used an unconventional method of travel that required them to pierce the fabric of reality.

This shattered the fragile third sphere which alarmed Destiny, being the eldest of the 12. In response to this, Destiny created "Eternity's Thread" an infinitely powerful artifact that had the ability to turn back time in the entirety of Haien'Echti.

Destiny did not have limitless power, but he was immensely powerful. Even so, all his magic was only able to turn back time to a thousand millenia before the shattering of the third sphere, well after Courage had formulated his plan to conquer other planes.

Again the third sphere shattered and Destiny once again turned time back. Again and again for countless eons this happened until Destiny's sanity broke under the strain of using the thread time and time again.