Arrowhead (Fallen Star)

• Type: Divination Object, Astronomical Phenomenon
• Owners: The Centaurs of the Forbidden Forest
• Maker: N/A (Natural celestial origin)

The arrowhead is described as a shard of white-hot stone that glitters like a “tiny, brilliant diamond.” It is shaped like a conventional arrowhead and is intensely hot to the touch, capable of singeing the mossy ground upon which it rests. It is referred to as a “bright-white, arrowhead-shaped star” that has fallen to earth.

The primary property of the arrowhead is divinatory, serving as a powerful omen for those who can interpret it, particularly Centaurs. It is not a tool to be actively used but rather a portent to be observed and understood. According to the centaur Firenze, the arrowhead is a sign from the planet Mars, which he calls the “bringer of battle.” Its appearance as a “fallen star” signifies that a great conflict is imminent and unavoidable. The Centaurs view it as physical proof of a future that is written in the movements of the planets, a tangible piece of a celestial forecast. Firenze uses it as a teaching aid in his Divination class to illustrate the centaurs' methods of reading the future.

The arrowhead was discovered in the Forbidden Forest by a centaur colt in the spring of 1996. The colt found it while foraging for herbs, such as mallowsweet and sage, which the Centaurs burn to aid in their stargazing. Firenze brought the object to his Divination class in Classroom Eleven at Hogwarts School of Witchcraft and Wizardry to show his students. He mentioned that the Ministry of Magic has a name for such fallen stars, calling them “arrowheads,” which suggests that while rare, this is a known magical phenomenon.

The arrowhead appears in Harry Potter and the Order of the Phoenix and serves as a significant piece of foreshadowing. When Firenze shows it to Harry Potter's class, he interprets it as an undeniable sign that war is about to break out. This directly confirms Harry Potter's own fears and visions regarding Lord Voldemort's return to power and his search for a weapon. The object reinforces the gravity of the impending Second Wizarding War and highlights the difference between centaur Divination—based on observing immutable cosmic events—and the more imprecise human methods like tea-leaf reading. The arrowhead's prophecy of battle is fulfilled a few months later at the Battle of the Department of Mysteries.

The arrowhead is a literary device used by J.K. Rowling to build tension and provide external, mystical validation for the conflict that defines the second half of the series. No further information about these “fallen stars” or the Ministry of Magic's classification of them is provided in the seven-book canon or other official supplementary materials.