I don't know... it's hard to see what actually happens in the video!

If Jadis can use magic in our world, that makes her rampage a much higher-stakes thing than it is in the book. Are the film-makers doing it on purpose for that reason, to make the episode a lot more dramatic and frightening rather than just comical?

On the other hand, in the book she doesn't have a wand. Glumpuddle mentions something in the comments thread under the news article that he's suggested before on Talking Beasts: when she became the White Witch in Narnia, did Jadis start using a wand as a sort of "work-around" that enables her to use magic again in worlds where her original powers don't work? If so, could she have discovered how to do this while in our world? Slightly complicated, but not impossible...

The elephant in the room with this (so to speak) is the fact that in Charn, at least in the book, Jadis's powers include the ability to destroy every living thing in an entire world with a single word. Plus the ability to reduce solid material objects, like iron doors, to dust. The idea of her being in our world with those capabilities is... something that could take this way outside the realm of what most people would say is suitable in a children's story.

Maybe it turns out that she still has magic powers on Earth but they're much weaker or more limited — for example, a "blast" that would have pulverised people in her world just pushes them away in our world? That's a reasonable compromise that would make her still scary and dangerous without being utterly terrifying, and could add a bit of comedy with her frustration as people and things she's trying to destroy only get shoved aside a little way. I could live with that as a change from the book that still sticks with the spirit of the original story pretty well.

Or we could be misinterpreting an unclear moment from a single video and it could turn out to be quite different in the finished product!! We probably won't know for sure until we see the actual movie. 

I agree the video is quite hard to see exactly what happens, especially when viewing on mobile, but when zoomed right in, there are probably a few key takeaways you can assess:

• Jadis reaches down and grabs *something* from somewhere. It is unclear if this was on her person or attached to the horse.
• Jadis extends her arm straight outwards towards the crowd on one side.
• An individual in the crowd is shot backwards, presumably attached to a stunt leash. He does not merely fall over as if struck by a blunt instrument.

Putting that all together, and giving the eye witness on the ground the benefit of the doubt that his interpretation is likely to be better informed than ours, and also given the context of this being Jadis, I think the Wand theory is most plausible.

Though I could also buy the idea that she is utilising the lamp-post cross bar, and it's merely her super strength that causes the man to fly backwards so violently... But it doesn't really seem like she is swinging her arm in a striking motion, and the man would surely be struck into the ground, not flung backwards in that situation.