1816 Ld. Byron cvii. 58 The lord of irony,—that master-spell, Which stung his foes to wrath.
1917 F. W. O. Ward 28 Who shall tell Its power and passion, with the master spell That spurns misgivings under?
2009 C. Penczak II. 24 The master spell is a major working of transformational magick... The master spell represents a major working in your life, to transform yourself.