Depending upon where you live, you are likely to find that the majority of the mushrooms you discover are not poisonous but not tastey either. Not all non-psychoactive mushrooms are poisonous. But the vast majority of all mushrooms are inactive. I can't for the life of me understand why so many people see some sort of mushroom - of the milllions of different ones out there, and automaticly figure that becaus they are mushrooms they must be magic. Well, there is magic in all mushrooms but rarely are they what you seek. As I have said, I have been foraging for mushrooms in various parts of this country and have NEVER found an hallucinogenic one unless I was directed to a certain patch at a certain time of year in a certain place - EVER.
P. Cubensis occupies a small segment of the entire range of mushrooms that are easy to spot once one has already seen them, and the forager can be assured (on the north american continent) that if they have seen them in the wild once or twice they will not mistake them again. To my knowlege, any mushroom that bruises blue and yields purple brown spores is indeed cubensis - in north america.
But, as I have said over and over again, one must take into consideration how they grow, where they were found, how they smell, how they bruise, how the gills are attached to the stem, what exactly they were growing on, how they mature, what season they grow in, were they in clusters or singular, what sort of pellicle they have (if any), and these things cannot be identified through a few pictures.
Even professionals have problems identifying mushrooms or are not wary enough to keep from putting a few "look alikes" in their basket, and you actually want to publish a few blurry pictures and get a difinitive answer as to their safety, let alone their activity?
Shaggy manes, cubensis, amenita muscaria, certain puff balls and a few others are examples of mushrooms so distinct that they can be identified through pictures alone, the others? not so much. you will not lose your liver if you eat just any mushroom - probably. But what sort of trip would you enjoy if you were uncertain as to the EXACT nature of what it was you were putting in your craw? what if just one of that batch of liberty caps you ate was a galerina and you weren't thinking or being greedy?
yet we see this over and over and over again "is this a magic mushroom"? get yourself a key, get yourself an expert on the species you are hunting for, do some research, go out on foraging trips with others and closely examine what it is you find - it's fun, and after a while you will being to understand the underworld of fungus. When you do, you will realize the foolishness of posting a few pictures with the hope that maybe it might be that special one.
So far in the years I have been here, I have seen one - ONE person publish pictures of something that may have been azurescence. One, now what do you think your chances are?
And - if you do decide to try to eat it, do your hospital and your loved ones a favor and leave a labeled sample of what it was you ate on your kitchen counter so that the doc at least has a fighting chance of saving your life.