>>34111074OG Dragon needs to be Pure Dragon-type.
Also, it wouldn't have those energy cable things that B/W-Kyurem have because those are basically unholy abominations held together by the ice Kyurem produces.
OG Dragon would be a slick, grey, ice-less energy factory.
And Dragon energy is a thing in Pokémon, and it's definitely not as specialized as Fire or Electric energies would be.
Big grey sleek dragon with a multichromatic tail generator. That's the OG Dragon.