This thing should have been a Mythical. It has gimmicky Forme changes, a BST of 600, and zero relevance to the storyline of Gen VI. This thing was basically useless for the entirety of the gen, and they even gave out an event of it, hyping it up next to Shiny Xern/Yvel without even giving it Thousand Arrows/Waves.

It would have made much more sense to put this thing between Hoopa and Volcanion in the dex, and made it event only instead of keeping it in a cave since the start of the gen and banning it from official competitions for no good reason.