I want to make a hgss cerulean cave mewtwo that is 6iv and shiny, but I get a pid mismatch message. Could someone help me generate a pid that works with what I want? Also could you then tell me how I can do it by myself? Here's the mewtwo that i want.
Mewtwo
Ability: Pressure
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature 6IV