I didn't have vivid nightmares with shrooms nor did my dreams resemble the trip in any way.
With mushrooms (I had the Mexican ones in tea) the experience was quite profound. I looked around and felt that I was part of a chaotic world from which order inevitably arose. Such feelings would then lead me to a sense of knowing something about reality which was paradoxically contrasted by me trying to figure out what it was that I knew.
Then, in such state I began to pay attention to things in reality that I normally wouldn't - usually involving cause and effect. I'd become euphoric and laugh at the strange delusion that I was somehow an incarnate deistic god who had seeded the reality circus for my own amusement. I had become temporarily insane.
I'd look at the sky and see angels and strange divine beings. The parks seemed like mystical forests with strange beings lurking in the shadows, a train resembled a futuristic land rocket, statues moved and winked at me, there was electricity and luminous energy in the air, I could make out intricate patterns everywhere, people's faces where like the clouds of Jupiter, dodgems at a prom were like giant snakes and I felt like John Travolta on the dance floor (I was full of confidence and attracted a lot of female attention), I felt a buzzing energy aura around my head and I literally perceived myself to be 7ft tall.
You see why shrooms were a preference? Because of how they effected me.The case was different with salvia. Vivid nightmares were occasional. The rush with salvia caught me off guard. It showed me how indifferent reality is to all my earthly attachments. It took me to uncomfortable and extremely alien realms where I felt like I was hanging on the edge of my existence. I understood then that there is no purpose or meaning to anything and that we, by necessity, make it all up.[ Post made via Android ]