Neomenancy
The great secret of the various types of divination is that, at first, they were all pretty absurd ways of going about the business. After all, really: predicting the future from star patterns? Entrails of random animals? Throwing sticks in the air? The absolute first time somebody tried any of those techniques, or any of the others, they must have felt like complete and total idiots. And the divination method almost certainly didn’t work — at least until somebody sat down and made the blessed thing work from sheer force of will.