"Spring Carnival"

The “Spring Carnival” series was first introduced in February 2011. They have a mint-green border and 110 total cards: 45 common cards, 55 foil cards, 10 story cards.

This series tells the story of the return of Spring to North of North, and the planning of a Spring Carnival. It also introduces various carousel horses of legendary steeds and the heads of various herds.

Horses
This list is based on the official U.S. checklist.
 * Anemone
 * Athena
 * Avalon
 * Bella
 * Guinevere
 * Harmony
 * Heart
 * Iceking
 * Kitty
 * Lien
 * Maximus
 * Mireldis
 * Nova
 * Pantheon
 * Paris
 * Rohna
 * Rosebriar
 * Saturna
 * Shenandoah
 * Sierra
 * Sif
 * Silvanus
 * Sirocco
 * Soot
 * Soul
 * Starlight
 * Twig
 * Valkrist
 * Wings
 * Zabarius

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