I am going to catch Mew. So I need the best nature of it. I also have to use sync. My friends told me to take BOLD/ TIMID/ CAREFUL nature. But I think Timid One is Best for Psychic Pokemon.
What do you think?
Firstly because mew is a psychic Pokemon you want stab and most good psychic moves are special but also some of the best moves that mew can learn are physical so I won't go for any decrease in those. Mew has pretty good speed do I would develop on that and go for either calm or careful depending on your move set (calm for a special and careful for a physical).
Source: https://pokemondb.net/mechanics/natures
Hope this helps