Basty
A Basty or Bastı (Azerbaijani: "Basdı") is an evil spirit or goblin in Turkic mythology which rides on people's chests while they sleep, bringing on bad dreams (or nightmares). Beliefs. The Basty was also believed to "ride" horses, which left them exhausted and covered in sweat by the morning. Basty included witches who took on the form of animals when their spirits went out while they were in trance. Animals such as frogs, cats, horses, hares, dogs, oxen, birds and often bees and wasps. In their metamorphosed form they could fly through the night, walk on or hover  above water and travel in a sieve. Dead basty witches were said to return as ghosts. Basty was a dark spirit that takes a form of a beautiful woman and then visits men in their dreams, torturing them with desire, and dragging life out of them. It is a common belief that basty enters the room through the keyhole, sits on the chest of the sleepers and tries to strangle them . Folklore. Its victims are often females, whom it attacks during the night, controlling their dreams and creating horrible nightmares (hence the Turkic word Kara-basty ("black pressure", meaning a  nightmare). A Basty attack is called Karabasan. Karabasan is when an Basty sits astride a sleeper's chest and becomes heavier until the crushing weight awakens the terrified and breathless dreamer. The victim awakes unable to move under the Bastys weight. It may also include lucid dreams. There are different types of Basty in Anatolia: Al-Basty, Kara-Basty, Kul-Basty, Sary-Basty ... Characteristics. Basty is best known for its shapeshifting abilities, similar to the creatures from werewolf lore. It may change into a cat, dog, snake or a fox. It has also been said that it can fly like  a bird and ride a horse. Protections against an alp include laying a knife under a pillow, or iron things. Steel is also used.