Go with the Jaw fossil. Aurorus is terrible. Like, even awful in-game, terrible. I've made garbage like Butterfree and Farfetch'd work in-game just fine, but holy shit, Aurorus was the very first Pokemon in over a decade that I just couldn't get working. So many fucking 4x weaknesses on a slow Pokemon.
>>16459545Refridgerate Hyper Beam is actually just about the only thing it can really do in competitive. It requires prediction to pull off and will almost always end with your Aurorus getting sacrificed, but at least it's something.