The engagement bracelet functions both as a motif and a symbol in the text, linked to the theme of The Corrupting Nature of Unchecked Power. Alistair Brightbane misuses his magic as a Siphon to create the bracelets—one of which Meryn wears—which put a “thrall” or spell on their wearer. The manner in which the bracelets are created illustrates Alistair’s cruelty and corruption. The bracelets contain blood that is obtained non-consensually from humans, thus trapping the human’s mind and life force. The power of the bracelets allows Alistair to control the minds of the wearer and even steal the wearer’s own abilities. Meryn notes this when she observes that Killian is able to usurp her power of communication and telepathically broadcast to all Bonded because she wears his engagement bracelet. As a symbol, the engagement bracelet, in particular, represents the male subjugation of female power.

Killian uses the bracelet as a bridge to enter Meryn’s dreams; unable to occupy her physical space, Killian tries to colonize her mind. The bracelet remains on Meryn’s wrist even though her engagement to Killian has ended, signifying the persistent, toxic power of patriarchy. Meryn observes that the bracelet has even corrupted her magic.