The purple mist traveled through the air on their way to the city, corroding and burning everything in its path  
After reaching the city, proceeded to go destroying buildings, also of filling the hearts of fear and desperation to the edge of madness  
Feeling the pain of their people, the Princesses decided to use their magic to combat the threat, but rather than trying to expel the mist of the city, is increasingly towards stronger as if absorbing their powers  
It was then that the mist swirled and took her true form, revealing her in the eyes of the princesses, which were stunned at the fact that she is causing such devastation and suffering to ponies  
Luna: Twilight Sparkle  
Celestia: What do you think you are doing?  
Dimness Void: Since you two did not allow me to amend my mistake and break the spell, which pushed them to me, because then everyone will stay away from what makes them happy  
Then she proceeded to attack the princesses with magic, immobilizing them and blocking their powers  
Dimness Void: All will live in absolute dread and cry out for mercy, but I will not give any, because now I will rule, no more princesses, I’ll just be the Empress  
Dimness Void: Now I will tear what everyone value most, I will end the day and night, from now neither sun or moon will rise again  
Both princesses fell into a deep sleep while his powers were extinguished while the moon and the sun were eclipsed