Psilocybin is another serotonin drug. Also, Cannabis doesn't have dangerous interactions with shrooms or LSD. This is a bad guide.
Psilocybin and LSD only interact with the serotonin receptors, they don't cause the body to release more of it like MDMA and a couple of the 2C compounds do.
Well I know what I am doing tonight.
Throwing a dart at that poster and letting that determine your fate, right?
Darts are played by sets of three, so you know what you have to do...