The shining beast of the mountain is the master of storms. He makes them, he tames them, he dispels them, all with a stone-shattering roar. To see him in stillness is a rarity, and most never see him at all – each dash is as fast as lightning, his paws drumming beats like thunder across the ridges of the mountains.
Though it may be assumed that he is a spirit, no-one has yet found his origin, and with his form so bold and unchanging, it may well be that he is a creature gifted with magic, just as some people are. To what end? Who knows.