The Storm Thieves
The Storm Thieves is a book by Senior Historian Evelyna that describes the history of Titanstrike. The book's fourth chapter discusses how Mimiron and Thorim imbued Titanstrike with lightning. Chapter eleven describes an earthen legend of when "the sky went mad" and thunder rolled through the heavens for weeks on end. Loken and several of his fellow Keepers followed the thunderous noise far to the south, where they discovered that the sky's unrest was caused by Thorim hunting scaled creatures with Titanstrike. Chapter twenty describes how the only beast to escape Thorim and his two worgs on their hunts was a monstrous jormungar worm, which the Keeper and his worgs pursued across the north for decades until the beast fled, never to be seen again.