>>16670898Some tips for that:
-Leading your party with a Synchronize ability Pokemon gives wild Pokemon a 50% chance to have the same nature as the synchronizer. The synchronizer does not need to be alive.
-You can 'check' legendary stats before catching by using a one under Pokemon: Using a Pokemon with a Speed stat one under the desired Mewtwo Speed, you can quickly weed out slow ones. Using a Pokemon with a HP stat one under the desired Mewtwo, Endeavour will weed out the weak ones.