In Arthurian Legend (the poem Gawain and the Green Knight), on New Years Day, a knight dressed all in green comes to Camelot and challenges King Arthur. Sir Gawain (who while competent is also a lovable hothead) accepts the challenge for his king and friend. The Green Knight then challenges him to strike him down on the condition that Gawain must receive the same blow exactly one year and a day later. Gawain is successful in striking the Green Knight and decapitates him, but then in a shocking t