Spook's Metal Letter

Spook's Metal Letter emerges as a pivotal artifact in Mistborn Era 1, serving as a cryptic warning inscribed on metal that survives the world's cataclysmic end. Discovered amidst the ruins in The Hero of Ages, it unveils Spook's firsthand chronicle of the Final Ascension, revealing hidden truths about Sazed's preservation of humanity and the transformation into the Cosmere's new reality. Its enduring nature symbolizes the intersection of Allomancy's steel inscriptions with divine intervention, bridging the series' apocalyptic climax to future eras.