Many of us can probably help you obtain the events and legends. You wont need to get a hacked gyarados.
Which legends and events do you need?
All of the ones I can't obtain through normal catching means on Omega ruby. The ones I have technically are Ho-Oh, Groudon, Palkia, Tornadus, and Reshiram.
I also would like the mega stones associated with those that have them and for all versions if there are multiple versions.
I am a collector at heart and on Pokecharms I became well known but I don't see anyone I used to know there who'd be able to help.