I’ve had a recent success in dream walking with baneful magick not by visiting their dreams, but drawing them into mine.
To be upfront though, only once have a tried this. This is not quite the same scenario as what you’re talking about either. My goal hadn’t been to inflict pain, but shows how something similar can be accomplished. It was able to be sustained with less energy and for longer too.
This happened when I got sick not too long ago, with covid. I am not adept with healing magick at all either. When I was sick I felt so beat I could barely do much more than loosely communicate with some spirits nevermind attempt to dreamwalk to someone else.
So I tried something different. Instead I opened a connection to someone I know who is adept with healing, pulled them into my dream to more or less vampirize their abilities.
With a trusted spirit, I’d asked them to appear as frightening as possible to that person, and also to give the illusion that I was in danger, hurt, something to compel them to heal with a sense of urgency. Then repeat the cycle (as dreams often do) to lock them in longer.
I’d also had to mask my identity, seeing as I am not on good terms with this individual lol. That too seemed to be an important component to the success — if someone doesn’t like you, you might have to modify how you do the dream walking.
The fever broke the next morning. I only had the fever for one day — huge for me because once I get sick like that, recovery usually takes a very long time! It still took additional time to recover of course, but it was nowhere near as bad as many other colds/flus I’ve had in the past.
As for drawing someone else into your dream, that gets more complicated and can take a lot more preliminary work. I do not think I would have had as much success as I had without a lot of other prior endeavors into that person’s dreams. It also wasn’t the first time I have managed to pull that person into mine (sans any baneful magick).
I wish I had more instances of success to be more confident in my success with this strategy. I also prefer to have some replication attempts before even sharing anything like this, but there’s so little out there on dream walking. If you (or anyone really) tries this or similar and has success, I’d love to know.