>>16272103You need 2 games to do that. You have to RNG the Egg on the first game, and ID/SID that makes the egg shiny on the second. After you recieve the Egg from the delivery guy you send it to the second game and hatch it there. You need to be 100% sure your timing is right, because if you miss your frame youre basically fucked.
Also, keep in mind that Nintendo considers shiny Manaphy hacked because they were too retarded to predict players would be able to manipulate the game like that. This probably also means that you wont be able to send it through the PokeBank, even when the method you got it is completely legit.