Chapter 636 - Chapter 178: Undead Creature_3

What was peculiar was that when these completely shattered bone birds that couldn't possibly revive, their grey mists would rise into the sky. However, they didn't dissipate, instead, they were absorbed by other bone birds. Some of the bone birds had absorbed so much fog that the mist surrounding them gradually turned black. Their greyish-white bones also deepened in color due to that, and they seemed to be much stronger than ordinary bone birds. If dozens of mutated bone birds hit Ah Dai's shield continuously, his combat qi would vibrate.