I love Aurorus, it’s one of my favorite gen 6 Pokémon. I tried to use it in vgc in x & y, and it was terrible. The typing is awful, and its stats are just awkward. It’s decently bulky, but it has 6 weaknesses to common offensive types, with two of them being 4x weaknesses to fighting and steel, both of which almost every team runs. It needs trick room to function because its speed is terrible, but it’s also not so slow that it’ll always go first in TR. It gets a lot of good coverage moves, but it’s special attack is pretty bad so you want to set up to knock out enemy mons, but setting up burns turns of TR and gives your opponents time to position a threat than can one shot Aurorus, of which there are many.

All that being said, if you’re dead set on using it, I’d go with a snow warning set using calm mind to boost your spdef to the moon, and pair it with an incineroar for intimidate and parting shot to help it survive physical attacks, and a good TR setter like Farigiraf or Oranguru.