I'm helping a friend with some background research, and Russian folklore isn't a strong suit of mine. Has anyone ever heard of any kind of figure from Russian folklore who is involved in any way with prophecy, divination, telling the future, etc.? Whether it be a deity, a spirit, a folk hero, a villain, a monster, whatever. Even if it's just a figure who has only prophecied or told the future one time in a folk story or legend, it would probably work.
I've done a book search (Amazon, BN.com), a Google search, a Wikipedia search, and even a JSTOR search, and have come up with nothing so far.