When The Student Six learn of Headmare Starlight's odd decision to have Discord teach them their final lesson of the school semester, the gang is the farthest thing from amused. Not just because of Discord's track record of creating trouble, but because they have come to learn the truth of him being the one who brought King Sombra back, the destroyer of their idol, the Tree of Harmony. Bearing a grudge, the students reluctantly go to Discord's lesson, none the wiser to the fact that there is a familiar villain lurking in the shadows, looking to manipulate the darkness within their hearts...

Art is by SambaNeko. https://www.deviantart.com/sambaneko/art/P2P-The-Rise-of-Sombra-796228744