Gameshark Cheat Pokemon Smaragd How Do You Catch Mew And Clebi Without Using A Cheat Or Gameshark On Pokemon Sliver Version? I Need Help!?

How do you catch mew and clebi without using a cheat or gameshark on Pokemon Sliver Version? I need help!? - gameshark cheat pokemon smaragd

I must really know how to do that, I would like to know how metwo too! Please help! PS Pokémon Silver