Hello hello~
Thought I might drop this lil website here for ya if ya aren't using it~
pokebase.app/pokemon-cham...
You can search for pokemon that fit your conditions here~
...sadly there's none that really fit that exact description.
pokebase.app
Calm Mind | Pokémon Champions - PokéBase
The user quietly focuses its mind and calms its spirit to boost its Sp. Atk and Sp. Def stats.