Rule 34 Dev - book cutie_mark detailed_background female feral hair hooves horn lying purple_hair solo text wings rodrigues404 friendship_is_magic hasbro my_little_pony mythology princess_celestia_(mlp) princess_luna_(mlp) twilight_sparkle_(mlp) equid equine mammal mythological_creature mythological_equine winged_unicorn english_text|5642874160