Hmm, you could always do ones representing some of the more important tarot cards, like the The Fool, The Magician, The High Priestess, The Empress, The Lovers, The Hermit and so forth. The characters don't have to be exactly as the cards show, just personality-wise they would be representations of what those cards meant, of course you would have to know your Tarot cards very well because you would also have to know how all the diferent combinations of Tarot cards interact as well, that is what makes learning to read Tarot cards so hard, good luck with that though.