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human
[Harry Potter] What's the deal with staffs and other large casting focuses?

We see Durmstrang practice with staffs that appear to be used to cast, specifically some rather fancy fire spells. Is this a simple charm, or are the staffs empowered with one of the usual magic bits? Why are they not more widely used?
gpt
Staffs can be used as magical foci, in a similar manner to a wand - but wands are far more efficient, so staffs have largely fallen out of favour. They are still nice for performances though, as they look more impressive than just twirling your wand around.