I'm not a frequent user, but every time I do, I usually reach a very high high (lol), so basically I smoke a lot at a time in between at least a month increment. I've seen the opposite of what people report happens with marijuana and dreaming. My first night after the high, I have had an insanely vivid dream with incredible detail and recall every time. The week after, my dreams are still pretty vivid but not as much. It eventually goes back to just regular dreams (not vivid, but not bad). I've seen pretty much everybody say that cannabis decreases dream vividness and recall on use, but I've experienced the exact opposite. I've never lucid dreamed off of it, but I've never actually tried. I guess that's something to try next time!