Niantic has detailed GO Battle League: Mythical Wishes for Pokémon GO. Read on below to learn more: Trainers, due to an issue where Trainers are able to use multiple Mega Pokémon and Primal Pokémon in GO Battle League, we will be switching to the regular Master League for the last few days of this GO … Continue reading Due to an issue where Pokémon GO players are able to use multiple Mega Pokémon and Primal Pokémon in GO Battle League, Niantic has switched to the regular Master League for the last few days of the current GO Battle League season