The cow-headed mask was about the size of a human head. The mask was a deep blue color with strange patterns all over it that he had never seen before. Waves of strange energy fluctuations were constantly being emitted from the mask. There was also a weird-looking character written on the spot between the eyebrows that showed the identity number.
Not only is it able to conceal the presence and appearance of the person wearing it, but it is also a secret treasure that allows members of the Impermanent Alliance to communicate with each other. Once the person wearing it loses the right to become a member, the mask would automatically be destroyed.