Wait for Mewtwo to return in 5-star raids
Join Mewtwo raid battles during special events or raid rotations
Use Remote Raid Passes or Raid Passes to participate
Defeat Mewtwo and catch it after the raid
Complete special research or timed research if Mewtwo is offered as a reward
Trade for Mewtwo with another player if you already have one available for trade
Watch for Shadow Mewtwo in Team GO Rocket events and defeat Giovanni when it is available
Purify Shadow Mewtwo only if you want the purified version
Check for event announcements in the in-game news and official Pokémon GO channels