RE: Pokémon X / Y General Discussion - Don't Post Topics That Have Their Own Thread!
Well, let's use an example here. I want a 5 iv Venusaur. To get this I will need to catch two Ivysaur from the friend safari with their two perfect iv's being different (all safari pokemon have two perfect stats guaranteed), and one of them will need to have the nature I want to pass down (this is easier with sychronize pokemon). Then take the two ivysaur, and put them in the daycare, one with the destiny knot (guarantees that the pokemon pass down 5 ivs out of the 12 total between the 2) and the one with the good nature holds the everstone to pass down the good nature. Then you breed until you get one with 3 perfect ivs, and swap it with one of the 2 iv ones, and repeat this process of swapping better ivd pokemon for worse ivd pokemon until you get the ivs you want.
Hope that was simple enough.