Originally published in Tzvi M. Rabinowicz (ed.), The encyclopedia of Hasidism (1996), p. 124. Ansky’s very popular play The Dybbuk has, as a central theme, an exorcism practiced by a hasidic tzaddik. There are, in fact, numerous tales of tzaddikim being called upon to use their magical powers to drive out a dybbuk (lit., “attachment”). The…