Rule 34 Dev - backstory black_border book border cutie_mark dialogue dust equestria female feral glowing glowing_horn horn inside magic mountain open_door outside solo spread_wings spying text wasteland wings estories friendship_is_magic hasbro my_little_pony mythology princess_celestia_(mlp) equid equine mammal mythological_creature mythological_equine winged_unicorn absurd_res english_text hi_res long_image tall_image url|17479446880