There are two things I absolutely want to be able to do in the Pokémon games (I currently own the old gameboy games (blue, yellow, silver), and newer 3DS games (Alpha Sapphire and Y)), and that is to have a living Pokédex and have a Shiny team of my favourites (Blastoise, Arcanine, Tyranitar, Alakazam, Snorlax, and to be decided), and have a living Pokédex (at least one of every Pokémon type in my boxes).
The friend safari (which has an increased chance of providing shinies) is very useful to achieve the first goal, but trying to achieve the second goal, I was wondering which 3 games combined would be the ideal combination to get a complete Pokédex. Especially when it comes to legendaries.
From the fourth gen and up, preferably.