Hack the game otherwise, it's impossible.
you cant
yes
you have to get dexoys
Just one
You can't buy them
Use a GameShark.
I don't know a master ball cheat, but there is a way of duplicating a Pokemon holding a master ball so u get two master balls and so on.
Duplicating master balls on Crystal at PlayR, is best learned by trial and error. Short cuts such as cheat codes are considered by consensus to be unethical and are strongly discouraged.
You can buy Game boy Advanced cheat games. You can then Click on the 999 Master balls cheat.
sorry, but that is not an actual game, ruby is a game, but i have no idea what ruby destiny is.
use an action replay