[LockonStratos]

That is a question that has plagued us since BW. I doubt it'll ever truly be answered, as BW is probably THE most divisive pair of games in the franchise and are thus most likely to be ignored in future.

Anyway, to actually answer the question, probably something that looks like Kyurem B and W being fused together, but in a very streamlined and natural way that makes the former two look like someone hacked it up and glued the pieces back together. Just my guess, could be totally off-base on that one.

Of course, I'd be more interested in its typing. It could either be pure Dragon or have some gimmick that lets it switch between Ice, Fire and Electric.