I own Pokémon Y, and Alpha Sapphire. Which ones (barring Friend Safari) will I still have to trade

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I own both Pokemon Y and Alpha Sapphire. My goal is to use AS mostly to catch Pokémon I can't get on Y, and then transferring them to there using the Pokébank. The friend safari in Y is also a huge help to be able to get types I couldn't get otherwise.

Going from these facts, and the assumption I could get any Pokémon family available in the friend safari through codes and then breeding them, for which ones do I still have to trade?

Best Answer

According to a spreadsheet I've made for myself to answer a similar question you will need to trade for those non-mythical Pokémon:

  • Houndour
  • Houndoom (or evolve Houndour)
  • Ho-Oh
  • Groudon
  • Palkia
  • Tornadus
  • Reshiram
  • Xerneas