Talk:Rarity/@comment-5038193-20130717173504/@comment-4918670-20130717182545

In the Comic Book series of the show it was called the Nightmare Arc

Early in the arc, each member of the Mane Six is disturbed by a particular nightmare. Rarity's hits her particularly hard when she witnesses everyone else admiring a far more generous pony while leaving her behind. Rarity is abducted in the process and carried off to the moon where she is deemed the perfect host. She resists at first, but eventually relents due to the creatures exposing her fear once again. In her weakened state, she is transformed into Nightmare Rarity.