S'Danzo divination - its been written several times that the S'Danzo (or at least Illyra) doesn't worship any gods (ilsig, rankan, or otherwise), but they do follow 'the pattern'
Illyra -
“When I read [the cards], the querent and the cards and I are all linked in the Pattern and the cards that come up reflect his relationship to it. The Pattern is the Cause; the cards are the effect. My Seeing only translates to the querent what is already there.”
it sounds like this would directly apply to divinations using tea leaves, bones, stones, etc.