Black butterflies swarm in the thousands or even the tens of thousands. They live in the Desert of No Return, attacking at it's will. They glow with a silvery light, they form patterns that aren't just capricious flight, but, clearly, orchestrated by some higher intelligence. D fights them of with his blade, while Granny Viper uses a flamethrower. from the Capital and Clay Bullow uses his golden harp. They have no special attack, but like the globes of light, they are sent by the desert to find their location. The brains of those who witness the patterns in silvery light give off a certain frequency that allows the desert to track its prey.