A play on the fall of Dread Empress Triumphant. Part of it can be found in the Epilogue of Book 1:
“What say you, Empress of Praes?
Here you lie upon the blood-soaked ruins of your dominion, surrounded by the corpses of the legions that once swarmed over the world. Hundreds of thousands dead for the sake of your wretched ambition, your mad design to bring to heel the kingdoms of man. In all the history of Creation no one woman has been so wicked as you, and I will have my answer.
Why, o Empress of Ruins?”
She shrugged.
“Why not?”