A new Harry Potter theory explains a major unaddressed spell mystery which gives more insight into the complicated rules of magic. The Harry Potter universe has expanded greatly with the release of the Fantastic Beasts franchise, although a better Harry Potter prequel was already written and has given audiences more insight into the depths of the wizarding world. Throughout the Harry Potter movies, magic is shown to be various and versatile, whether it's involved in fixing Harry’s glasses to apparating across the country — and the rules are similarly various and versatile.
One magical ability is apparating, which allows the wizard to transport from one location to another. Apparating requires a lot of skill and mind control, and so wizards are not allowed to practice apparating until they are 17, as any mistakes made while trying to apparate can cause «splinching,» such as what happened to Ron in Harry Potter and the Deathly Hallows. There are more rules and difficulties with apparating, such as trying to apparate long distances. JK Rowling confirmed (via jkrowling.com) that Newt Scamander had to take the boat in the first (and arguably the best) Fantastic Beasts movie because apparating that far could be seriously damaging.
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It is not just the wizarding rules that affect magic in Harry Potter, one theory (via Reddit) explains a wizard’s skill level affects the execution of the spell, which has previously been an unaddressed mystery. When apparating, most Wizards make a popping sound, but the theory explains that the more highly skilled Wizards, like Dumbledore, apparate silently. The theory compares this to Mundungus Fletcher who apparates with
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