Imagemaker
Don't know how much tarot is in this novel, or anything about the plot, but look at the cover!
http://www.amazon.com/exec/obidos/ISBN=0970152582/ref=nosim/aeclectic/
(Found this through random surfing)
http://www.amazon.com/exec/obidos/ISBN=0970152582/ref=nosim/aeclectic/
(Found this through random surfing)