A young stallion, barely a full adult, goes through what it's like to have his own child. But in a way much different from what would be natural. The result: he has actually created an invincible, and slow-aging species of Equestrian origin which can be used for many things. New antibiotics, new genetics, new ways to deal with diseases.

Or…For Chrysalis to take the mare away, and use the unborn foal's own soul to feed herself in a way which would make her invincible…No more feeding…no more struggles…and world domination.