On the Rök runestone, a kenning is employed that involves a valkyrie riding a wolf as her steed:  Among the Bryggen inscriptions found in Bergen, Norway, is the "valkyrie stick" from the late 14th century. The stick features a runic inscription intended as a charm. The inscription says that "I cut cure-runes", and also "help-runes", once against elves, twice against trolls, thrice against thurs and then a mention of a valkyrie occurs: This is followed by "I send you, I look at you, wolfish perversion, and unbearable desire, may distress descend on you and "jöluns" wrath. Never shall you sit, never shall you sleep ... (that you) love me as yourself." According to Mindy MacLeod and Bernard Mees, the inscription "seems to begin as a benevolent formulation before abruptly switching to the infliction of distress and misery, presumably upon the recipient of the charm rather than the baleful valkyrie", and they posit the final line appears "to constitute a rather spiteful kind of charm aimed at securing the love of a woman". MacLeod and Mees state that the opening lines of the charm correspond to the "Poetic Edda" poem "Sigrdrífumál", where the valkyrie Sigrdrífa provides runic advice, and that the meaning of the term "skag" is unclear, but a cognate exists in "Helgakviða Hundingsbana I" where Sinfjötli accuses Guðmundr of having once been a ""skass"-valkyrie". MacLeod and Mees believe the word means something like "supernatural sending", and that this points to a connection to the Ragnhild Tregagás charm, where a valkyrie is also "sent forth". The Old Norse poems "Völuspá", "Grímnismál", "Darraðarljóð" and the "Nafnaþulur" section of the "Prose Edda" book "Skáldskaparmál", provide lists of valkyrie names. In addition, some valkyrie names appear solely outside of these lists, such as "Sigrún" (who is attested in the poems "Helgakviða Hundingsbana I" and "Helgakviða Hundingsbana II").