I've read a book on this: The Full Facts Book of Cold Reading by Ian Rowland. It talks about how tarot and other mind-reading, fortune-telling etc. systems work. Tarot, in my opinion, is simply the use of barnam statements, Jacques statements etc. used to create a cognitive illusion. It's okay for
Someone I know who does some beautiful artwork is in the middle of drawing a set of tarot cards. I'd kind of like to learn the details of tarotship and to be able to use them, but when I'd actually do so I've no idea. entertainment but not to take too seriously.
The only 'supernatural' system I really don't like is mediumship - the pretence that a person can communicate with the dead. That's horribly exploitative and should, frankly, be banned.