This person supposedly created a prayer named for “joy after sadness” that ends in repeated pleas to them to “Help,” “Reach me,” and “Hasten.” This person inspires the feeling of intizar. A massacre of pilgrims designed to attract this person only ended up attracting a boy from Isfahan who turned out to be a book-burning Zoroastrian. Four deputies facilitated this person’s minor ghaybah, a doctrine that has been defended by analogy to the long-lived Khidr. In some traditions, this person avenges Ḥusayn and the other Muslims slain at Karbala on Āshūrāʾ. The word kafir will be visible on the forehead of a being defeated by either ‘Isa, this person, or both, and this person will then establish one last rightly guided (10[1])caliphate before the Day of Judgment. For 10 points, name this slayer of the Masīḥ ad-Dajjāl whom Twelver Shias consider the twelfth imam. ■END■