Complteting the National Dex

[bluegrowlithe]

So im attempting to Complete the national dex but i only have omega ruby i was wondering if i could trade with people and give back like legendarys some pokemon exclusive to x and y and alpha sapphire and stuff like that and if you want to give me a specific pokemon for another pokemon we could work something out also i would like to make eggs of pokemon if possible so if were trading and i leave i will be back