[DISCUSSION] How Can Shiny Legendaries Exist?

[Fooni]

I bet it is indeed the multi-verse theory. That is a good question actually.
Since Hoopa's ring can enter anywhere and any dimension,
you are probably right about entering that dimension there and then.
I didn't know what that gold ring with purple haze air was in ORAS until i saw the movie Hoopa or heard of Hoopa.
In the movie Hoopa, he summoned Shiny Rayquaza.