Does magic exist in reality?

I hear and read a lot about magic in islam, but I've never known anyone who knows how to do it?

Does Islam have some sample magic that one can try out?

For example, I was given a Quranic cures book once, in which you can find many Quranic cures. One of them is this:

ECZEMA: Recite (Quran 23:14) 21 times daily for 41 days in the morning and evening, blow on water and drink.

Is that an example of Islamic magic?

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