Turns out, Sombra is back, wow. Discord takes it upon himself, as a FRIENDSHIP EXPERT to help reform Sombra. How the heck will he pull this off? Sombra is a stubborn guy, he likes crystals, hates not-being a king. So it's not going to be an easy task to reform him. Well, it's going to go much worse than expected.
Coverart: https://www.deviantart.com/assassin-or-shadow/art/Help-Me-461682268