Corpse emperor bird feathers

Wu Shuai takes out a rank eight immortal material: bird feathers with a stone texture that look lifelike, covered in grey-white light and smelling of a corpse. They are the immemorial desolate beast corpse emperor bird’s feathers. ^{ch. 1879}

He blows the feathers into his army ant swarm. The ants land on them and devour them completely. Even ten feathers are enough that a tiny bit feeds an army of ten thousand ants for a long time. The feeding creates corpse ants that emit death energy, eat fallen army ant corpses to grow stronger, and at most match a king ant rather than a queen ant. ^{ch. 1879}