In my world, there is the Horn of Valere. *Moiraine's tone is calm and even, but her gaze has not left Cuthbert.*

Tia mi aven Moridin isainde vadin, it is inscribed. "The grave is no bar to my call."

When it is blown, it calls the heroes of the Ages back from the dead to stand against the Dark One. Artur Hawkwing himself has answered its call; it is meant to be used at the Last Battle, but it has already been found and sounded.