Japanese Mew? Ew...let's try the EV'd Dragonite instead or better yet, the shiny Dusknoir. I can give it every move you mentioned except for Psychic (only reason being is because I don't have the TM for it, lol).
I can EV train a Gastly, which would eventually become a Gengar for you. Just tell me what nature. That shiny Milotic looks extremely fancy...if you won't part with it, then I'll be happy to take that Shaymin or Mew off your hands.