When I think of a wizard's duel, I think of the Disney movie, THE SWORD IN THE STONE, where Merlin and Mim are taking turns throwing spells at each other and themselves. If one becomes an elephant, the other becomes a mouse which frightens the elephant, or they change the other into a mouse so they can become a cat. Or the duel between the Death Eaters and the good wizards in HARRY POTTER AND THE ORDER OF THE PHOENIX where the wands are used almost as swords to parry and thrust spells an...