In the Delphox pictures, it says Mystic Fire. In the Greninja pictures it says Mystic Water. Now looking at Greninja's moves and look, it is starting to look more psychic than the supposed fighting. Maybe it will turn out that all three starters are part psychic and have the ability(?) Mystic (type) which is different to the normal Torrent, Blaze and Overgrow. However Frogadier has Torrent as an ability so maybe these mystic things aren't abilities at all. If so I have no idea what they are so if someone knows anything can they tell me because I am really confused
And about Vivillon, I don't think it is shiny, I think it is the male form of Vivillon as the markings on its wings are different