[GEN VI] Need help with gen 6 exclusives

Hello. I'm in need of some help. I'm trying to acquire version exclusives and trade Pokémon that I cannot acquire normally. And while I did try look in gts. They are all hacked Pokémon either being used for billboards as shameless self promotion or to troll people and force close games.
The following Pokémon I need are.
Skrelp or its evolution
Yveltal.
Aromatisse
Slurpuff
(I've gotten amaura)
And that's it. Just the gen 6 version exclusives that i cannot get through normal means.
Side not I'm genuinely surprised there isn't that many version exclusives that are unavailable through normal means