Bind me in Darkness

I was created to end a war and in doing so we started something worse. Like well trained animals we struck where asked, tearing down whole civilisations that got in our way until it was impossible to know whether cities ever stood where ruins fell. I would never have stopped. Never have faltered. The darkness was a craving I saw no reason to fight against. I was built to cause destruction and nothing could create such terror as we could. And then I made a promise. And everything changed.