the other myth is that it was carved by a traveler who came back a wish granting beast that had been injured so the traveler decided to help the beast and stay with it until its passing, at the beast's death the traveler decided to use the remains to create a mask to remember the creature and hopefully pass its wishing abilities through the new creation he crafted. now the rumor around the net is that the ancient tribe descended from this traveler and used the mask for the above purposes without knowing what the object had been made of or what its already magical properties were.

its always been haunted/cursed though, the majora's mask is said to be the embodiment of a lost tribe's hexing rituals until the tribe in question realized how dangerous the mask was and hoped to seal it away to that it would never be misused by unworthy hands seeking power and destruction over the world. or at least that's one of the myths of the Mask...