Apparitions are described as being undead creatures that lack the ability to interact with the physical world. Instead, they attack by suggestion, fooling victims into believing that they are being strangled, even though the Apparition itself is unable to directly inflict physical damage.
"Darkwolf" by Frank Frazetta from the animated motion picture FIRE AND ICE (1983) by Ralph Bakshi. Frazetta worked on the film with Bakshi, and they based the animation heavily on Frazetta’s art style. Frazetta really understood how to depict barbarians, and I love to use his artwork as an inspiration for my own barbarians.