Crystal Mirror

The Crystal Mirror is a magical mirror featured in My Little Pony Equestria Girls, My Little Pony Equestria Girls: Rainbow Rocks, and IDW comics. Twilight Sparkle and Sunset Shimmer use the mirror to travel back and forth between Equestria and the human world.

Depiction in films
The Crystal Mirror appears as an ordinary standing mirror with a horseshoe-shaped rim lined with pink gems. Its standing base is also lined with horseshoes, and attached to the top is a smaller window with a depiction of a pony inside.

The mirror acts as a gateway to the human world that, according to Princess Luna, opens once every thirty moons. Once situated in Canterlot, it was relocated to the Crystal Empire when Princess Cadance took over. When the gateway opens, it remains open for a span of three days; on the third day, when the moon reaches its peak in the night sky, the gateway closes, not to open again for another thirty moons.

In My Little Pony Equestria Girls, Sunset Shimmer uses the mirror to travel from the human world to Equestria in order to steal Twilight Sparkle's crown—the element of magic. Twilight uses it to follow her, transforming into a human herself and appearing just outside Canterlot High School.

The portal leading back to Equestria opens behind the horse statue in front of the school. When Twilight receives the crown at the school's Fall Formal, Sunset threatens to destroy the portal with a sledgehammer and trap Twilight in the human world forever unless she surrenders the crown. In the end, Twilight manages to keep her crown and return to Equestria with it just seconds before the portal closes.

In My Little Pony Equestria Girls: Rainbow Rocks, the Crystal Mirror is relocated once again to Twilight Sparkle's castle in Ponyville. Twilight is unable to use it to return to Canterlot High because thirty moons have not yet passed since it closed. However, Twilight uses one of Princess Celestia's books that is magically connected to Sunset Shimmer's book in the human world as a power source for the portal, allowing her to travel to and from the human world at any time.

Depiction in comics
In the My Little Pony Annual 2013 mini-comic The Fall of Sunset Shimmer, Princess Celestia shows the Crystal Mirror to Sunset Shimmer, her personal student at the time. In her reflection, Sunset sees herself as an Alicorn princess and briefly as a human. Her obsession with the mirror leads to her abandoning her studies and escaping through the mirror into the human world.

In the My Little Pony Annual 2014 mini-comic Return of the Mane-iac, the Mane-iac discovers the Crystal Mirror in her abandoned shampoo factory and uses it to travel to the human world. Unlike Twilight and Sunset, the Mane-iac does not turn into the human upon going through it.

In the story arc Reflections, Star Swirl the Bearded invents a similar mirror that allows travel to a number of different universes. This mirror is stated in to be a prototype of the Crystal Mirror used in Equestria Girls. In, the mirror is destroyed and causes the walls between the universes to finally crumble and the worlds to merge.

The Crystal Mirror also appears on cover B of, covers A and B of , and cover RI of. The prototype mirror also appears on cover RI of Issue #18 and covers A, B, and the Hot Topic variant of Issue #19.