Summoning Charm

From Hpwiki

Accio is the incantation of the Summoning Charm, used to make objects fly straight to the spell caster. The pronunciation is up for debate, however, Scholastic's "official" pronunciation is "a-see-oh", which is how the audio books say it. The movies pronounce it with the Latin pronunciation, with a hard C, "a-kee-oh".

Uses in the books:

Molly Weasley uses it to acquire Weasley Twins' joke products that they are trying to sneak out of the house before the Quidditch World Cup, Harry Potter and the Goblet of Fire, 1994
Before the first task of the Triwizard Tournament, Harry Potter struggles with this spell, but with the help of Hermione Granger masters it when threatened with a dragon, the Hungarian Horntail, and finally uses it to summon his Firebolt, Harry Potter and the Goblet of Fire, 1994
The imposter Alastor Moody uses it to summon the Marauders' Map off the stairs after Harry's trip to the prefects' bathroom, Harry Potter and the Goblet of Fire, 1994
In the Muggle graveyard, Harry uses it to summon the Triwizard Cup to him when being attacked by Voldemort, Harry Potter and the Goblet of Fire, 1995
In the Department of Mysteries, Death Eaters attempt to summon the prophecy out of Harry's hands, Harry Potter and the Order of the Phoenix, 1996
In the Department of Mysteries, Ron uses it to summon a brain, Harry Potter and the Order of the Phoenix, 1996
Failed attempt on the Hogwarts Express, Harry tries to summon his wand to him non-verbally after being petrified by Draco Malfoy, Harry Potter and the Half-Blood Prince, 1996
Harry summons some of the barmaid, Rosmerta's brooms after Harry and Dumbledore's venture so they can return to Hogwarts quicker