Pokedex help

[Wild_Squirtle]

Ok basically I really need some legendries to fill up my pokedex. This will of course be tradebacks (unless you want to get rid off them for some bizarre reason). I need the following

Landorous
Terrakion
Kyurem
Regice
Regirock
Mew

If anyone can help me out itd be much appreciated :) thanks