Jirachi has the ability to hibernate for extensive periods of time and when it awakens, can grant wishes. However, if it is sung to in a voice of purity, it will awaken in the middle of its slumber, grant one wish to the singer and then resume its thousand-year slumber. Like Mew, Celebi, and Victini, Jirachi can levitate in the air. Jirachi can also attack while it is sleeping.
In the anime, Jirachi cannot create an object that is desired from a wish; instead, it teleports the desired object to the person that made the wish. Also, Jirachi's awakening is signified by the passing of the Millennium...