I heard Rattatas and Bidoofs are easy to breed, so about 23 TBT? I'm buying for Black 2, and 255 speed EVs. Jolly nature too. I want it to be AFAP, as fast as possible, so it can MAYBE outspeed a Shuckle.
Ugh, forgot they shut down the DS internet service. Guess I'm closing the thread, as I don't have gen 6 or 7 games, and there aren't any 3DS emulators for the Amazon play store.