a beautiful red horse leaped forward as the raven had said it would, and the king said he should carry him to his castle and wanted to mount, but Faithful John was quicker and shot the horse.
Von Franz presents the Red Horse as an enchanted, deadly lure that the unconsciously wise servant must destroy against the ego-king’s wishes, establishing the term’s primary fairy-tale context in the depth-psychology literature.
, Shadow and Evil in Fairy Tales, 1974thesis