harry potter - What are the rules and limits of Accio spell? - Science . . . 83 We know that Accio spell (aka Summoning Charm) has some limits: It can be blocked (e g Harry couldn't Accio the Diadem in RoR in Deathly Hallows) Many more failures are listed on Wikia But what are the exact full rules and limitations governing the spell in Harry Potter world? Distance? Line-of-sight? Knowing exact or approximate location?
Why couldnt Harry use Accio on the Golden Egg in Goblet of Fire? Harry also couldn't use accio on Horcruxes and Hermione couldn't use it on Rowena Ravenclaw's Diadem or Helga Hufflepuff's Cup, and a death eater couldn't use it on Harry's invisibility cloak I'd guess that "special" items are either unaffected by the spell because of their "specialness", or were purposefully designed to block the spell Concentration doesn't seem to be the only limiting
Why didnt Hermione use Accio spell to get the correct key in . . . In retrospect, why did it appear that Quirrell also avoided using Accio? The key for the door was clearly damaged by the time the trio arrived And if Accio can bypass this puzzle, why even bother with supplying brooms when you can ensure authorized personnel would just use the correct spell?
harry potter - How quickly do objects summoned by Accio fly? - Science . . . ‘Accio’ only works on inanimate objects While people or creatures may be indirectly moved by ‘Accio-ing’ objects that they are wearing or holding, this carries all kinds of risks because of the likelihood of injury to the person or beast attached to an object travelling at close to the speed of light