Rule 34 Dev - abstract_background armor black_body black_feathers black_fur blue_eyes blue_hair cutie_mark feathered_wings feathers female feral fur glowing glowing_eyes hair horn princess royalty solo spread_wings wings cosmicunicorn equum_amici friendship_is_magic hasbro my_little_pony mythology nightmare_moon_(mlp) equid equine mammal mythological_creature mythological_equine winged_unicorn 2015 animated short_playtime|3678477530