Penrod's Heart Spike

Penrod's Heart Spike, a five-inch metal spike stealthily embedded in King Penrod's heart during the tumultuous events of The Hero of Ages, represents a insidious tool of Allomantic manipulation in the Mistborn saga. Small enough to evade notice and eventually healing into his flesh, it enables profound mental influence over Penrod, turning the king into a puppet for Preservation's desperate gambit against Ruin. Though its role is confined to the series' climactic third book, the spike underscores the escalating stakes of cosmic Hemalurgic warfare, with Penrod's compromised will contributing to the chaos engulfing Luthadel.