The Elements of Harmony are magical artifacts that are used by Twilight Sparkle and her friends to defeat [http:// Mare Moon and defeat Discord said to be the most powerful magic known to ponydom.]
The Elements are first mentioned in the first episode's prologue, where the narration tells of two unicorns who ruled the land of Equestria. The unicorns, later named Princess Celestia and Princess Luna, were responsible for raising the sun and the moon, respectively, but the younger, Luna grew resentful of their subjects who slept throughout the night and "shunned" it. She refused to lower the moon, and her bitterness transformed her into Night Mare Moon, who vowed to keep Equestria in eternal night. Her older sister used the magic of the Elements of Harmony to banish her in the moon.The segment showing Elements of Harmony in the prologue has gems colored as follows, clockwise from the top: red, orange, green, blue, pink, and the center gem colored purple. When Twilight and her friends use the elements, there is no green gem, and instead there is a magenta-colored gem that is bestowed upon Twilight.