Here is how Thaddeus E. Klang sends Arthur and Cecil to kidnap Baby Emerald in Emerald's Grand Day Out.
Meanwhile, Thaddeus E. Klang escaped from prison with some help from Feathers McGraw who retrieved his Metallic arms and black robes.
Thaddeus E. Klang: At last, I'm free from prison. Thanks to you, Feathers.
Feathers McGraw: (nods)
Thaddeus E. Klang: Arthur! Cecil!
Arthur: Yes, Klang?
Thaddeus E. Klang: Find any foal suitable for a ransom. I must have my revenge.
Cecil: Is your revenge starting now are later?
Thaddeus E. Klang: Go!
So, Arthur and Cecil flew ahead to search for any foal for ransom.
Back in the Carousel.
Spike: I have to go now, Rarity. I've got magic training wiht Shining Armor.
Rarity: I hope you have a splendid, Spikey Wikey.
Baby Emerald: (giggles)
Spike: Also, Luna had a newborn baby. Her name is Moon Starlight.
Rarity: Have a great time, Darling.
Spike: Bye, Rarity. (kissed his wife) Bye, Emerald. (kissed her baby) Daddy loves you.
Spike left for magic training.
Rarity: Sylvia, Are you ready to prepare Emerald?
Sylvia Marpole: I wouldn't miss it, Rarity. (takes Emerald) Are you ready, Emerald? Hmm?
Baby Emerald: (hugging Sylvia)
Rarity: Aw, Look at Emerald. She loves you.
Sylvia Marpole: (laughs) indeed she does.
Rarity and Sylvia went upstairs to prepared Emerald.