My Little Pony: Friendship Is Magic Season 7 Episode 25 - Shadow Play Part 1 Episode Title:Shadow Play Part 1.Episode Description:Sunburst shares his discovery of Star Swirl's secret journal with Twilight and her friends, which reveals how the sorcerer and Equestria's other legendary heroes—known as the Pillars of Old Equestria—sacrificed themselves to defeat the monstrous Pony of Shadows one thousand years ago. While researching the six heroes' disappearance, Twilight and company deduce that the Pillars are still alive in limbo, where they have imprisoned themselves alongside the Pony of Shadows for the past millennium. Against Starlight's reservations, Twilight is convinced that freeing Star Swirl would benefit Equestria with his knowledge. To do this, each of Twilight's friends obtains one of the Pillars' artifacts scattered, gathering them to the site of the sealing ritual. Although they succeed in releasing the Pillars, doing so inadvertently brings the Pony of Shadows back as well.