Recently I found this mushroom at the edge of our yard. I was surprised to learn from mushroom ID apps that it is likely either the Death Cap (Amanita phalloides) or the North American Destroying Angel (Amanita bisporigera). As you can probably tell from these names, both of these mushrooms are deadly poisonous.
The Amanita genus of mushrooms includes the most dangerously toxic mushrooms in the world, as well as some desirable edible mushrooms. It is estimated that Amanitas are responsible for 95% of mushroom poisoning fatalities worldwide.
Several edible mushrooms do not look too different from these poisonous amanitas. Such misidentifications can lead to tragedies. Mushroom poisonings are not common, but they have happened in Minnesota, including one case in 1989 in nearby Brainerd MN.
Poisoning by these mushrooms is insidious. The first symptoms, including gastric distress and headache, commonly wane after 24 hours. However, while the victim temporarily feels better, the toxins of these mushrooms attack the liver and kidneys. Even with modern medical care, the fatality rate of poisoning from the Death Cap is about 20%.