I have recently developed a liking of ghost pokemon as such i want a rare ghost and i already have captured all the ghost types and trained them for a reason (contests, battle ect) and i want a shiny Shedinja however as they arnt captured in a conventinal sence how do you get one do you

1: Find a shiny Nincada and evolve that into a shiny Ninjask and a shiny Shedinja will apear?
or
2: Evolve lots of nincada (not shiny) until a shiny Shedinja apears?

Evolve a shiny Nincada.

To be perfectly honest, I'm not sure, but ShinyHunter07's answer seems plausible, since the Shedinja copies all the stats of the Nincada it evolves from.

It is, I've evolved a shiny Nincada before.