Quoted By:
>The ΩR/αS League
>In the ΩR/αS League, you can battle using Pokémon Omega Ruby or Pokémon Alpha Sapphire. In this league, you can use only Pokémon that you can catch during regular gameplay, hatch from an Egg, obtain within the game, or that were officially gifted in either Pokémon X, Pokémon Y, Pokémon Omega Ruby, or Pokémon Alpha Sapphire.
>The X/Y League
>In the X/Y League you can battle using Pokémon X or Pokémon Y. You can use any Pokémon you caught in those games, as well as any Pokémon brought to your game using the Nintendo 3DS downloadable software Poké Transporter.
I'll let you decide ;_;
