I'm almost finished my pokedex, all I need are a few legendaries. I only need them for dex data, so I have no problem trading them back.
What I need:
Articuno
Zapdos (though I could catch this one on my own, if I could ever find it)
Moltres
Raikou
Entei
Tornadus
Landorus
There are other pokemon I don't have, specifically, Mew, Manaphy, Darkrai, Shaymin, Arceus, Victini, Keldeo, Meloetta, Genesect, and Diancie, but they're not needed, just would be nice to have for completeness.
I'm not sure what I could offer in return for helping me... Just say what you would like, and I'll see what I can do.