Mewtwo is one of the most sought-after Pokémon in Pokémon GO, and
dedicated Trainers may find a truly exceptional specimen if they’re lucky
enough to be invited to EX Raids. Mewtwo will return as the opponent of these
special encounters, and the Psychic-type Pokémon will know the move Shadow Ball
when caught—a move that Mewtwo can no longer learn in most ways. Plus, if
you’re even luckier, the Mewtwo you encounter might also be a Shiny Mewtwo.
EX Raid Battles are only available to Trainers who receive an
invitation to compete. You can become eligible to receive an EX Raid Pass when
you win a Raid Battle at a qualifying Gym. You’ll be able to see which Gyms can
host EX Raids through a handy tag when you look at the Gym details. EX Raid
Passes will give you the date and time when you’ll be able to challenge Mewtwo,
so mark your calendar and prepare your Pokémon for a difficult battle.