Now that the Fairy type has been confirmed and we have some examples, we can start to speculate better than before. This list includes all of the 'reasonably possible' fairy type Pokémon changes. Japanese fairies aren't always 'soft, pink and cuddly', but can also be mischievous, mysterious, and powerful, explaining why Absol, Zoroark, and Whimsicott are in there. But they can still be graceful, pretty much including anything with the ability 'Serene Grace'.
This also goes hand-in-hand with the Nordic "Tree Of Life" rumor related to Yveltal and Xerneas. Maybe all Mega Pokémon are based on Nordic Gods and that is why there are a limited number of them.
A headcanon I've had since I was 15. Still haven't abandoned it because it's silly and makes the entirety of the Slowpoke line that much more awesome. Be sure to share your dumb headcanons in the comments.
The theory is taken from Pokebeach. I merely made the meme. I think this is a very legitimate theory, solid all the way through.
From DineshThePoet, "The color theme is highly intriguing. Or is it just a gimmick? One of the rumors did state that Xerneas would be found by the Stonehedges and Yveltal will be found atop the mountain. Hmm.."
