

Not in my experience, but 500 mg/piece (!) is at least 10x what I would consider taking if I wanted it to be an enjoyable experience, and honestly 50 mg would be pushing it. 5-20 mg is a typical dose.
All very YMMV, people have different metabolisms and tolerances, blah blah.
The spider corpse is an important piece of the art! It adds a memento mori aspect to what is otherwise just a cool place a web was spun.