Hello I'm new here I have a few questions they are the following: 1..

Question for Pokemon LeafGreen

Hello I'm new here I have a few questions they are the following:

1) Ive heard that when you get all the unowns and have 6 in your party in this order: ?, !, A, B, C, and D that you are invinsible. Is that true?

2) I've heard that in this game like the blue and red versions that you can multiply items in the fifth block by finding a missingo. I see that as a not working cheat does it work for any of you?

Last Question

3) There is a magic muffler cheat. The steps goes like this:

First release all your higest Pokemon or trade it then you beat the elite for 10 times
After that trade another game your weakest Pokemon and the other game should trade you a rattata holding a Iapapa berry.
Then use your vs seeker and challange all trainers you met from pallet town to the sevii islands. Then get a dratini and train it until it's a dragonite.

Make the Dragonite hold Salca berry and beat elite 4 five more times go to prof. Oak and use fly 3 times and then trade dragonite and your salca berry will turn into a magic muffler. I've tryed this alotta times but it doesn't seem to work. If you try this out I highly recommend you to trade your Pokemon to another game.

And Please tell me the results.

Please some one answer any of these questions THANKS