Help with Legendaries

[Katattack522]

Hey y'all! I'm working on completing my pokedex before sun and moon come out, to help get some of my favorite pokemon for a run through after my first run through of S&M. (I do a run through with pokemon from the game first, then I restart and do a run through with my favorites again, with a more thorough attempt) Anyways. I am trying to get a shiny charm so I need to complete the dex first, and need help with some legendaries.

TL;DR

I need legendaries for dex, will trade back.

All EXCEPT;

mewtwo
celebi
Jirachi
XYZ
Manaphy
Reshiram
Volcanion
Shaymin

Basically all of them