Hi I have a few questions since I am a newcomer to competitive Pokemon, so here it goes :p
1.) Would it be against any of the rules of legitimacy to use a Action Replay to find out your SID?
Not that I know of, its not like anyone is going to know the difference.
2.) Just to make sure.. is it also against the rules of legitimacy to RNG abuse? (Probably the same question as number one)
No, pretty much everyone does these days.
3.) Is it frowned on if you clone event Pokemon such as Pikachu colored Pichu or Jirachi?
No, once again, lots of people do this.
4.) What codes should I be using with an Action Replay assuming it is not frowned upon.
I use whatever I need at the moment. Just pick what you need I guess, kinda a vague question. I use the Have All TMs one, and the All Pokeballs 100%, along with other situational ones.
I probably have some more questions but this will do for now lol