Originally posted by KingD19
Is there any proof a detection spell would work on a moving shadow? Or someone moving so fast the person casting the spell can't keep up?And what shield charms would protect them from shuriken and blades? They protect against spells sure, but other stuff... Even during the final battle nobody even bothered to use spells. They either dodged or deflected everything thrown at them. Or got hit.
I'll have to get back to you on the detection spell. I'm not completely sure of how it works. I know the Ministry of Magic uses them to track people around the world or know when people use an illegal spell or something like that. At the same time though, I know it can be fooled too. Sirius black used his animagus abilities to avoid being found (as did Rons rat), and if transforming into a big black wolf or a rat can keep you hidden for decades, I suppose being a living shadow should work too. On the other hand, I also know that having dangerous intent matters too. The detection and protection spells at the entrance work by keeping out and tracking people with dangerous intent, so I'm not sure if their normal detection spells work similarly.
The basic shield charm on the other hand, can also protect against physical objects/people. I'm not sure how strong they are in this respect though or if transforming into a shadow would bypass it. The whole "shadow people" thing has me stumped.
Still, the ninjas would have to become tangible beings again if they want to actually attack, and at that point they would be bombarded with a ton of spells. They are massively outnumbered.
Also, wizards have spells to keep people from doing things. They have binding spells that keep people from teleporting away, and spells to force people to reveal their true selves (used on animagi to force them back to being human for example). They could pull that out to force the ninjas back into human form.
Jesus, there are so many variables when it comes to Harry Potter. I'm going back and forth. :/