A 14th century veteran war charger, having perished upon the field of battle, is given a second chance at life in a strange new world. But can a mare who knows nothing but conflict adapt to a land of peaceful pastel ponies, or will it prove too much?
Having been imprisoned for as long as anypony, including the Princesses, can remember, a villainous reindeer makes the best of his time inside his snow globe.
Novel Tale, a changeling living in Canterlot as a writer, has his peaceful life shattered when changelings from another hive attack, revealing the existence of changelings to all of ponykind. And his last book had a changeling character in it...
Silver Spoon. Derived from the phrase "born with a silver spoon in your mouth," which implies being born into wealth, privilege, and now a pony too apparently.
Centuries ago, Luna was shunned by her ponies and exiled at the hooves of her elder sister. She perished in her solitude, but her soul lived on through a stone. And some unknown time later a voice calls her to come out.