You could ask other breeders, I suppose. Since we've only just discovered the Pokemon from the Kalos region, it might not be a complete list if you discovered one.
It seems to be a Christmas tradition to give us foreigners eggs that hatch a shiny Pokemon. It's how I got my Bisharp.
...[A pause, Hiyami just looks over at her like she doesn't know what weird thing is going to come out of her mouth next.] I would think, and hope, that whoever does this wouldn't leave you out due to different beliefs. How Christmas is regarded here seems to be more on the secular level, I haven't seen a single mention of that Jesus fellow.
[Though theoretically, from what she understands about that man from Nazareth, he would be fully capable of creating miracles like shiny Pokemon.]
[video]
It seems to be a Christmas tradition to give us foreigners eggs that hatch a shiny Pokemon. It's how I got my Bisharp.
...[A pause, Hiyami just looks over at her like she doesn't know what weird thing is going to come out of her mouth next.] I would think, and hope, that whoever does this wouldn't leave you out due to different beliefs. How Christmas is regarded here seems to be more on the secular level, I haven't seen a single mention of that Jesus fellow.
[Though theoretically, from what she understands about that man from Nazareth, he would be fully capable of creating miracles like shiny Pokemon.]