The portal to hell is opened with the incantation of good intentions

"I would fight to make that bright and innocent past our future once again. Even if it means dashing myself against the evil and cruelty of this wasteland until there is nothing left of me. And then, when I am too broken to go on, I will float my dying body right down the throat of the darkness and make it choke on me. ” – Fallout: Equestria, Chapter 33