IF causality can go both directions in time, and a future event can cause an event in the past/present, what would that look like? I imagine it would look like random processes coming together to make a result, like its antecedents were being arranged.
If one were to take a deck of cards and shuffle them, it wouldn't matter _unless_ they influenced the reader to bring about the future event in some way.
Therefore, divination with cards or other random things would work but only for believers.