Moonstones

Moonstones are a special device used by the Stradun. Each of the 7 factions (Vampires, Sea Beasts, Ghosts, Werewolves, Zombies, Sky Beasts, Skeletons) stones are aligned, they can eclipse the sun and allow the monsters to roam freely. Unlike other gimmicks, they have no power on their own other than they are light sources that don't harm the beings of Stradow.