|15 caps will kill you. Fewer (but how many fewer?) will just make you crazy.|
This is the common variant around here, with a yellow or orange cap. I have seen some of the deep red ones, up north in the Bella Coola valley. Very pretty; the mature mushroom caps were flat discs, as big as a cherry pie. A cherry pie with a sprinkling of sugary crumbles on the top.
Fly agarics are known for the unpredictability of their effects. ... (they) can range from nausea and twitching to drowsiness, cholinergic crisis-like effects (low blood pressure, sweating and salivation), auditory and visual distortions, mood changes, euphoria, relaxation, ataxia, and loss of equilibrium. ...
In cases of serious poisoning the mushroom causes delirium, ... characterised by bouts of marked agitation with confusion, hallucinations, and irritability followed by periods of central nervous system depression. Seizures and coma may also occur in severe poisonings. (From Wikipedia)
They're still beautiful.