In Hungary there is a type of vampire known as a liderc nadaly. It hunts by appearing to lone travelers, using humor to gain their trust, and seduction to lure them into a secluded place. During sexual intercourse, it drains victims of their blood. It is especially fond of the blood of infants. It will also sneak into a home by shapeshifting into a ball of light, looking much like a CORPSE CANDLE, and flying down the chimney.

The liderc nadaly is created when a person eats the flesh of a man who was executed, and it can be destroyed by either staking it through the heart or driving a nail through its forehead. As it dies, the liderc nadaly changes into a werewolf-like creature.

Source: Haining, Dictionary of Vampires, 259; Ronay, The Truth about Dracula, 22