Wait so you want to know about people's experience with astral entities.. in dreams???? I've seen a lot more entities awake, but never in dreams. Even if I had, it would just cross my mind as a weird dream. That being said, entities can easily enter your dreams and manipulate them. The things that stand over your bed are commonly called Shadow People. Very real, google it. There's a site dedicated to accumulating reports about them.. and pictures.

My guess is, they feed off your negative energy or bad vibes (fear), when you get scared. They themselves are composed of dark energy, thus they need more to "survive". They lurk just below or dimension or physical plane. They don't see houses or streets, just other entities (us, etc). Like attracts like. If you're a negative person.. they are probably lurking around you always. Also, my guess is, they don't have an actual shape. No, they don't actually look human, because they are not. They are more of a cloud of smoke looking stuff, seen it before. I can conjure these things, as well as others.. but these are the most common. I wouldn't recommend conjuring anything you think is negative. Their energy will stick around, effecting you and your environment, until it has been cleaneed (sunlight works, good source of neutral/positive energy). Maybe they won't even leave after that, who knows.

So far I've never been scared by one. They are freaky looking, but have never attacked or sent any sort of bad vibe to me.. they're just... there. But I do sense a general negative vibe when they're around though.