Do you have anything to trade for it?
For Shaymin maybe we could work something out. But not for mew. I don't have much that any other experienced trainer has, but I do have a shiny Luxray, Volcarona, Shiny Growlithe, Shiny Braixen, Level 70 Steelix, Gengar holding gengarite (when it gets to you at least), Heatran, Braivary, Dragonair, Klingklang, Rhypherior (When it gets to you at least), Cobalion, Level 70 absol, Level 100 Kyreum, Level 100 Aggron, Level 41 wailord, Level 41 delphox, female fennekins, porygon egg (I wouldn't scam you, I don't want to lose this account...), Level 100 Ekans, Furret, Frosslass, Goodra, Japanese Z Unknown For Masuda Method, and Gorgeist.