From Lost Fables Wiki
Ritual of Contemplation: This ritual requires meditation, for a single hour, while one's hourglass runs out of grains. The ritual starts when one turns the hourglass over anew, and lasts until the last grain of sand is gone. Ideally, one clears their mind and focuses on being for the entire duration, but many are not capable of such a feat. Regardless, done properly, this is the most common method of contacting Sephradoir. This gives a plus 2 to attempting to contact the deity.
The second most common ritual to Sephradoir is the Ritual of Homecoming, a ritual intended to direct a gaian's soul to the parts of Mevvet that will result in their souls eventually being sent to the Concord. It is almost always done during a funeral, but the words themselves can be used at an altar to attempt contact.
Another ritual for Sephradoir is a blood sacrifice, done with a special luminide ritual dagger. Done properly, this only takes a few drops of blood, and represents the willingness for one's body and soul to return to the Concord. This gives a plus 2 to attempting to contact the deity.
Like all celestials, Dreidam speaks almost entirely in signs, almost never giving answers in absolute. One must interpret the will of the celestials in most part...