You tear relentlessly into the Tyrant, your fury fueled by the suffering he has wrought and the evil driving him to do yet more. Your attacks blast him, leaking his stolen energy into the Timestream as you pass back through the ages.
The Tyrant fights back with the desperation of the doomed, but to no avail. In the end, you crush the last of his essence just as you come out into the beginning of time. You watch the birth of the universe with relief and joy, knowing it is safe from the Tyrant's evil.
The power he had bled off - the gathered potential of the Tyrant's race - has spread across the timeline of this universe. It strengthens the mystical energies flowing through it, making strange and wonderful things possible in this Crossworld.