When we think about Buddhism, we don’t often think about monks and nuns conjuring spells or curses to break up lovers, exorcise demons, prevent unwanted pregnancies, or kill enemies. But for over two and a half millennia, magic and healing rituals have been an integral part of everyday Buddhism. They were also key to Buddhism becoming a cosmopolitan religion, flourishing in areas beyond the Indian Buddhist heartland. The magical aspects of Buddhist history, however, have...