So Yanma in DPPt is only available in the Pastoria Marsh and you definitely cannot Shiny Chain that. I've read a ton about Legality including using the legal.exe from this Forum. This thing passes legal.exe and also for the common eye. And this one is quite bugging me since I can't test it myself since I don't have a 3DS yet.
I've also seen tons online about the common things Pokemon Bank checks whether it's Location, Shinyness, Event-Exclusive Moves, that Thunderpunch Blaziken, Semi-Legit Arceus, some legit Pokemon not passing, and some hacked do.
So I'm wondering for this one, a Shiny-Chained Yanma from Pastoria Marsh, everything is legal, except the PID (and PID method), is it possible that Pokemon Bank has overlooked this? Or if anyone can confirm it?