I've heard of people having crazy experiences with muschrooms, and as far as mdma I mean does he know that's precisely what he took and the potency of the mushrooms as well could've changed...and he even said the form of mdma changed while he felt it tasted like 1000% pure mdma I feel that could be subjective like me loving one type of weed and getting stoned off my ass and you saying you don't get high on it you know what I mean? The fact he thought he thought he was dieing could've triggered an immense emotional reaction as well as a shit load of adrenaline I'm sure...It's always hard to tell what causes what when missing drugs, especially a hallucinogen/psychadelic and stimulant(don't know how else to classify E) I've heard of very few bad trips on dmt and even the negative ones were due to people fighting the high they were on... it sounds as if he got paranoid after puking (probably due to his combination of drugs and w hatever he ate/didn't eat earlier) when he felt people watching him and then he scared himself into a bad trip...and personally I couldn't imagine being in such a large crowd while tripping, it would've probably caused me to puke and panic as well...initial panic can definitely skew an experience....the user also spoke of not feeling the E hit him properly after 10 minutes...when I tried E each time it took dam near an hour after ingestion to feel a thing (and even then didn't feel much)
After finishing the post I see he found out the mushrooms did contain an MAOI but while I sympathize with him on his situation, do we ever really know what's in what were taking unless we made it. He should've seen how he felt on one drug then popped the other once feeling comfortable...It's messed up he didn't know but at the same time how would he have known what was in it eitherway (it could've been any type of mushroom) and he also took the E right after taking the shrooms and saying how it didn't feel right or how he thought he should....that alone could've led to a bad trip, the doubt in what he took originally, plus if the maoi worry was in the back of his mind to begin with why didn't he inquire as he down the shrooms?
One time w/o thinking I did a big line of speed about 20 minutes before dropping like 4 tabs of blotter...that was the wierdest acid trip I experienced...imagine tripping w/o feeling any of the happyness or euphoria that lsd usually brings, beyond that I dont remember more than a vage dark memory of 3 hours of peak and the last hour of the peak I was trying to remember my name(i knew that it was in my mind, I just couldn't get through the "fog" to access it) i started to worry a bit and let go of the worry cause there was nothing I could do. If I had kept worrying I could've really damged my mental state or my self by freaking out. I feel for the dude but if your not sure what your taking mixing ain the best idea cause it can lead to alot of unexpected dangers.