This giant mushroom is made entirely of ensorcelled blue-grey smoke. It looks a bit like mushroom cloud, although the overall form never changes, the smoke within does roil violently. Typically the adult versions of this mushroom stand about 10' tall with the head an approximate cylinder of 5 feet tall and as much in diameter; the stem grows to be about a foot wide at the base. It smells strongly of a campfire. Despite its looks this mushroom is actually alive, and reproduces with a smokey set of spores once/per year. In many respects it is much like a normal mushroom, you can cut slices of it off, cut it down like you might a small tree, and even cook it. It's edible and gives a nice smokey flavor to foods; it has no food value however; it is not sustenance. It's also quite pliable, so you can stretch pieces or compress them to a factor of 100x smaller or larger than the original. This could be really handy as you could squeeze a fair sized mushroom into a small container, walk off with it, and then set it up an a smoke screen with a few minutes of stretching. It can be worked much like a piece of canvas material, but it doesn't tie or take a needle.