Apuleius’ tale of Cupid and Psyche is shown to feature detailed knowledge of ancient magic integrated into the plot, especially the magic of the so-called ‘Sword of Dardanus’ spell and of other papyri with Middle Platonic content. A recently published gemstone from Perugia testifies to the wide distribution of the ‘Sword’. Apuleius’ allusion to the erotic spell involves both Cupid and Venus torturing Psyche. Although Venus’ intentions are to prevent the bond between the lovers, her actions inadvertently echo those depicted in the ‘Sword’ and contribute to the couple's eternal union. Ancient magic is therefore shown to be potent and effective, despite Venus’ plans. This is a methodology Apuleius is known to use widely, for example in his obvious allusions to, and adaptations of, Hellenistic poetry in the story. Magic joins poetry and philosophy as a category of texts shown to be playfully integrated into Apuleius’ construction of the plot of Cupid and Psyche.