1. its SOUL SILVER and 2. yes you can you can buy it at a department store.
you can get mewtwo more than once if you get it in firered or leafgreen and trade it via pal park
U will need flash for this. once you have flash you stand in the middle of his cave and use flash then go in and catch the FUTHAMUKA
just fly back
you must defeat the elite 4, after are you going to mt silver again.
In Pokemon Silver, Lugia is the first legendary Pokemon that the player encounters. It is found within the caves of the Whirl Isles once the player obtains the Silver Wing.
yes
the safari after you beat lance once
Once
Mt. Silver(Silver Cave), Is found by going to the entrance of victory road, and after collecting all 16 badges and talking to Pro. Oak, you can go to the left of the entrance . Once you keep on going, you will find the cave, and will need HM Flash.
Yes, you can duplicate Pokemon on Emerald more than once.
H0-OH , Lugia , suicune , entei , raiku . . . i think
you can trade once you have given elm the egg that you got from mr Pokemon