Here's a few isolated SFX from the HP movie.
I'm wondering how to recreate those SFX. Any idea ?
There's no set way of making these sounds, the first one sounds like lighting/electricity mixed with some sort of computer generated sound from a synth. Second one is something being pitched down again, maybe a synth. Third one, sounds like an explosion and again, mixed with a digital sound.
Of course, this is just my opinion and I could be completely wrong, but that's the fun of sound design. You can make anything sound like anything!