Amanita muscaria is completely unrelated to Psilocybe mushrooms and provides a very different altered state of consciousness.
Please search around and read trip reports; particularly on mycotopia there is a following of those who find an ally with the spotted-caps.
It is very powerful medicine and is NOT for lighthearted trip use. Most people consider it unpleasant. Common side effects are sweating, nausea, bursts of manic energy combined with extreme sedation. Most people agree that its best use is for quiet introspection, providing strong visual dreams for those who are able to train their mind to the effects of the drug.
Also be aware that the active ingredient becomes MORE active when it is excreted in the urine, hence "drinking the waters" to prolong a shamanic experience. Almost all positive reports of this substance include recycling of your own pee. BOTTOMS UP!