What is there to say about Blood Sabbath? It’s cheaply produced, goes on for half an hour longer than it needs to and is an entry level (s)exploitation flick.
Definitely of its time this would’ve been drive-in fodder at best. There is a coven of naked young witches who writhe around to a psychedelic soundtrack and at one point everything goes into a film negative effect just to screw with your head.
The story just about keeps everything held together. There are some interesting characters as well, but they die well before the end.
One for die-hard horror fans only.