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The third source is Rimbert's Vita Ansgari , where there are three accounts of what some believe to be the use of runes for divination, but Rimbert calls it "drawing lots". One of these accounts is the description of how a renegade Swedish king, Anund Uppsale , first brings a Danish fleet to Birka , but then changes his mind and asks the Danes to "draw lots". According to the story, this "drawing of lots" was quite informative, telling them that attacking Birka would bring bad luck and that they should attack a Slavic town instead. The tool in the "drawing of lots", however, is easily explainable as a hlautlein (lot-twig), which according to Foote and Wilson  would be used in the same manner as a blótspánn .