Pokémon ZA help for champions player

Hi I have a stupid question but would there a possibility of traiding with me starter trio from Kalos (greninja, delfox, chesnought) (or just greninja) that are from ZA just for moment for putting them into champions and out? I just want to unlock the stones in Pokémon Champion game cos I have all the nesesery mons but they unfortunate locked the stones and only way to obtain them is to send a ZA pokemon to game.