I have several friends who refuse to pursue any manner of paranormal activity without first completing a tarot reading.
I however happen to believe that the cards have only the power we allow them to have, and I also think that the outcome can be affected by the overall demeanor of the group, collective conciousness style.
I have, and know how to read a Thoth deck, designed by Aleister Crowley, but I use it primarily for World of Darkness games (players love the realism of props). This is a good video for a quick but accurate history of the cards, good find anon, cheers!