Princess Cadance is leashed to a railing along with Twilight and a few other mares. They're all completely exposed and their collars fill them with euphoria.

A member of the Followers of Discord is recruited to help the repopulation of the Crystal Empire... and claim quite a few mares along the way.

When a Discord-worshiping cult is ready to spread chaos throughout Equestria, one unicorn is sent to take over Ponyville. With his knowledge of mind controlling and body-altering spells, he knows just how he wants to do it...