Twi-ling

"Here she is, princesses," Twilight said smoothly.

"B-But Twilight! Why would you do this?!" Rainbow cried.

"She's all yours." Twilight winked and with her glistening green magical aura, unlocked the cages holding the princesses.

The pegasus put two and two together a moment too late. As if under a trance, the princesses walked to her and began tearing her apart, slowly. Turning her inside out. Removing her very soul.

"My queen, what do you want us to do now?" Luna asked Twilight.

"Oh, you just be my loyal, compliant subjects."

Everypony bowed down to Chrysalis and she loved it... As for the real Twilight, however... She was disposed of many, many years ago. And now, finally, the world was ripe for taking. And she didn't need anypony's help doing it. The fall of Equestria was complete. The rise of the changelings was now happening.

"The world will forever be mine."