BJORN TURNS INTO A BEAR

She then struck him with her wolfskin gloves, telling him to become a cave bear, grim and savag: 'You will eat no food other than your own father's livestock and, in feeding yourself, you will kill more than has ever been observed before. You will never be released from the spell, and your awareness of this disgrace will be more dreadful to you than no remembrance at all.' - Queen Hvit curses Bjorn, son of King Hring
The Saga of King Hrolf Kraki