Twilight woke up in a room made out of...clouds?
She looked around her, surprised to have survived the mud, then realized her horn was packed with mud, dirt, and rocks. She tried to clear the stuff clogging her horn with her powers and her hooves, but it wouldn't go away.
She couldn't use any spells.
"Princess Twilight! So good to see you!"
Twilight jumped, and, on instinct, tried to shoot a spell at her.
"Oh, sorry about that, your highness. The king has requested some...removal. Of all powers and spells. My apologies."
"Who are you?" Twilight examined the hologram.
"Oh, my apologies for that too, your highness. My name is Lightning Dust."
"Lightning Dust? ...Wait! You're the pegasus who competed with Rainbow! You almost killed us in a tornado!"
Lightning looked infuriated. "Dash almost killed you too!"
"Mares, mares, please!", a voice out of nowhere said calmingly. "No need to argue! What is in the past is in the past!"
They both looked at the hologram of a black stallion.
"And YOU are?", Twilight inquired.
"Oh, forgive me, your majesty. I am King Sombra of the Crystal Empire."
Twilight glared at him. "I remember you. You will NEVER be king!"
"Oh, but Princess, I already am. Well, for right now, I am considered a prince...Would you like to be my queen? We shall rule all of the world together!"
Twilight lowered her eyebrows. "Why would I EVER in my right MIND marry you?!"
He frowned. "Very well. You will just have to be one of my many servants in the village."
His hologram disappeared, so only Lightning's was left.
"You two WILL be stopped! I know it!"
Lightning looked at her. "I'm afraid that's not possible, princess. We've captured Cadance, Celestia, Luna, Soarin, Dash, and you. NOTHING can stop us." She vanished.