While I've heard of stories of people injuring themselves by jumping out of windows and so on, I've yet to hear a credible story about anyone dying from consumption of psychedelics, or indeed suffering seizures. Panic attacks for sure, they're quite unpleasant although in my experience pretty rare. All the statistical evidence suggests that psychedelics are quite safe compared to popular stimulants and depressives. I've had several bad trips, but I blame myself for those - smoking a ton of weed after you've also taken psychedelics is a good way to get disoriented.
There are many lesser-known psychedlics with scarily-low lethal doses. Bromo-dragonfly and some *-NBOMe compounds are a few that killed people recently. High doses of DOC can cause extreme vasoconstriction in extremeties, resulting in necrosis. https://psychonautwiki.org is a good site for investigating health risks.
