"Moonfairies"

The “Moonfairies” series was first introduced in June 2010. They have a blue border and 110 total cards: 45 common cards, 55 foil cards, 10 story cards.

The theme of this card series was Herd Moonfairy, and, like with Sunflowers, focused on a storyline of finding the herd.

In French, this series was known as "Fees de la Lune," and in German, "Mondelfen."

Horses
This list is based on the official U.S. checklist.
 * Alamar
 * Albion
 * Ambrosia
 * Anigan
 * Anthea
 * Beetlejape
 * Bella
 * Chortlebones
 * Fiona
 * Flipper
 * Gherkin
 * Janie
 * Jewel
 * Lillova
 * Maypop
 * Merrow
 * Minty
 * Mireldis
 * Moonfairy
 * Moonphantom
 * Moonsprite
 * Mote
 * Murttie
 * Nike
 * Nimblewit
 * Ondine
 * Phoebe
 * Pink Lady
 * Quinly
 * Royce
 * Sirena
 * Sylphie
 * Soot
 * Thunder
 * Tiara
 * Ticklebit
 * Tricksy
 * Trumbeau
 * Twee
 * Twig
 * Twinklehop
 * Willownix
 * Wings

Promo Cards
These are horses that were included in promo images or cards, but were never officially released in this particular series.
 * Twilight
 * Woodlock