>>20241166R4 or AR, and B/W or B2/W2. You'll need to transfer the Pokemon from those games to Pokebank, then to X and Y
If you don't want to be fully custom, want directly to the game cart, and allow a hard to control, but still controllable setup, get Powersaves 3DS. Not really Genning, but can provide the same results, provided you know your way around a hex editor.
