It is a play on coincidences, I find. I had just been browsing a book on tree lore.
[ Sasha ponders on that a bit -- ] I have yet to come across an exact book of spells, though I have seen ones that cover a broader spectrum. Though I suppose the more accurate ones you are looking should not be very far... Follow me? [ She will lead the way, talking as she does. ] There are books on ancient rituals and those that cover the occult sciences if that would help?