Here's a breakdown:
* The incantation: "Accio [object name]"
* The effect: The object is summoned to the caster's hand, regardless of distance.
* Limitations: The object must be within the caster's line of sight and they must know what it is they're looking for.
Examples of Accio in the books:
* Harry uses Accio to summon his wand in the Philosopher's Stone: He's disarmed by Snape, but uses the spell to get his wand back.
* Hermione uses Accio to grab a book: This happens in the library at Hogwarts, demonstrating that the spell can be used to grab things from a distance.
* Harry uses Accio to get his broom: This happens during the Quidditch World Cup, showing the spell's versatility.
Accio is a popular spell for a reason. It's useful, powerful, and relatively simple to perform. It's a great example of how magic can make life easier in the Harry Potter universe.