Veela

Veela are a race of semi-human, semi-magical humanoids reminiscent of the Vila in Slavic folklore. Little is known about their biology; they appear to be young, beautiful humans. Their looks and especially their dance is magically seductive to almost all male beings and some female beings, which causes such people to perform strange actions in order to get nearer to the Veela.

Nature
Veela are believed to have their own type of magic which does not require a wand. When Veela are angry, however, they transform into something more like Harpies - their faces turn into cruel-beaked bird-like heads while long scaly wings burst from their shoulders, and they can launch balls of fire. Veela seem to be quite an irascible race.

Cross-Breeding
Veela have been known to marry witches, although it is unknown whether they have married non-magical individuals. Children of these unions are half-Veela, and they will inherit magical ability from their witch parent and beauty and charm from their Veela parent. Veela traits seem to persist for at least a few generations.

Powers
Seduction: Veela possess a unique form of magic that creates an entranced effect wherein men fall into a trance-like state in which they lose sight of their surroundings and focus solely on the Veela's dance or appearance. Men are also prone to experiencing thoughts of strong desire to impress or be with the Veela in question. As such, Veela are always, and under any circumstance, physically perfect, graceful, and flawless, without anything that would make them look unattractive or distract from their presence. They are perfectly aware how to increase their appeal by apparel, action, or choice of words, but even these are simply details to enhance their natural appeal. Veela magic is passed on through the generations to an unknown limit when a Veela reproduces with a non-Veela.

Shapeshifting: When angered, those who are pure Veela are capable of transforming into a Harpy-like creature with scaled wings erupting from their shoulders and developing wrinkled and beaked faces, much like a bird. It is presumed that the wings which Veela grow when angered allows them to fly.

Pyrokinesis: Veela are capable of producing balls of fire from their hands. Although originally believed to only be able to do this while in their angered, bird-like state, it has since been discovered that Veela always possess this ability but only utilize it while angered.