Credit goes to Carnival-Tricks

Rivett finally reached the climax of his trip through Equestria. He began by going to the Crystal Empire to meet the royal family (or royal toys) of the empire.
The guards tried all they could, but all ended in failure as Rivett turned guards and even the royal guards into various plushies and diapers.

Taking delight, Shining Armor tried, but he soon found himself surrounded by ghost hands. He was folded, flattened and pressed and became a thick poofy diaper that rivett already taped up.
With a Sinister smirk, he pointed his towards Cadence, who was already terrified and tried to run.

Rivett used his ghost hands and grabbed her by her tail and readied has he pricked his finger with a needle and bioped her on the snout, ending a life-sized plush toy and happy that she's smiling (even though she's angry).
Rivett decided that they should have couples time as pressed his Shining Armor diaper against his new plushie, taunting that he plan on doing a role reversal when Shinin Armors full and Cadence begins to reek.

End

Rivett belongs to Me
Shining Armor and Cadence belong to Hasbro