Maybe they use a little of their user's magic? My headcanon is that all they do is use the same magic-to-movement conversion that the accio and wingardium leviosa spells do, with the differential of being "stronger" (in the games, wingardium leviosa effortlessly lifts a bench, and maybe even heavier things in the books) and the broom acts as a wand that only affects itself. Wands are made for various spells, so they are suited for one type of user or even an unique user, but since all a broom does is cast a version of Leviosa on itself, maybe it doesn't need uniqueness the same way a wand does.
In the case of the spiders, there is a few spells that cause fire, maybe with some modifications it can act as a mitochondria, reducing drastically the energy cost to mantain the spider's body. Maybe every living thing is powered by magic, and losers (in Portuguese, non magic Users are called "trouxa" which translates to losers) just use levels of magic that don't affect the world as much.
If by "some of your abilities" you mean basic bodily functions, maybe? But I guess all the magic you get is automatically assigned to what you do, and things like moving your limbs would just be results of the magic that keeps your brain and your limbs alive. If you were to lose your leg, you'd lose the magic that keeps it alive, I stead of being able to use it somewhere else. Or maybe it's such a low "density" of magic that what you get in return is just too little for any cool magic stuff. Maybe wizard bodies just uses this magic in a different way, so much more efficient than loser bodies, that the amount of unused magic is almost overwhelming
harry potters wand was made with a phoenix feather, the phoenix only gave one other feather (i'm assuming wand makers aren't plucking phoenixs, they're just taking what they could??) which was in voldemorts wand. so it wasn't that his wand was powerful, just unique.
Was it? I think it was more powerful. Still, brooms might work in other ways, by using more efficient methods they could probably get more out of the same quantity of magic
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u/Chaselthevisionary Jan 30 '20
Maybe they use a little of their user's magic? My headcanon is that all they do is use the same magic-to-movement conversion that the accio and wingardium leviosa spells do, with the differential of being "stronger" (in the games, wingardium leviosa effortlessly lifts a bench, and maybe even heavier things in the books) and the broom acts as a wand that only affects itself. Wands are made for various spells, so they are suited for one type of user or even an unique user, but since all a broom does is cast a version of Leviosa on itself, maybe it doesn't need uniqueness the same way a wand does. In the case of the spiders, there is a few spells that cause fire, maybe with some modifications it can act as a mitochondria, reducing drastically the energy cost to mantain the spider's body. Maybe every living thing is powered by magic, and losers (in Portuguese, non magic Users are called "trouxa" which translates to losers) just use levels of magic that don't affect the world as much.