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2018 5:4 ass_up bdsm bondage bound bridle butt crown cutie_mark dark dock_(anatomy)dungeon equid equine eyebrows eyelashes feathered_wings feathers female feral floppy_ears friendship_is_magic hair hasbro headgear hooves horn horn_jewelry horn_ring inside jewelry leash light lock long_hair looking_at_viewer looking_back mammal moonlight multicolored_hair my_little_pony mythological_creature mythological_equine mythology portrait princess_celestia_(mlp)purple_eyes rainbow_hair restraints ring_(jewelry)rope rope_bondage royalty sad scheadar shadow solo sparkles standing submissive submissive_female tail tally_marks watermark western_tally_marks white_body white_feathers winged_unicorn wings wings_tied