I've said this in another thread and I'll say it again: this isn't BW. Stop sticking XY Pokemon into BW tiers and assuming they'll work in the XY metagame exactly as they would there.Tha is just another Ice-type who'll have to play its role for weather and thats it. Considering HOW MANY hail benefited pokemon are in low-tier and none can appreciate it because hail is banned from low tier Aurorus will end up BL or NU (Refrigarate-only). I do like its typing minus its major weakness to the Kingtyping of 5th gen but it doest really have it. Its ability is as useless as Pixelate since the only Special Normal moves that could really be used are hyperbeam, boomburst, and swift. With Snow Warning you do have a possibility to do something with Aurorus but some people think ability-weather is OP in low tier. Thus even with a fantastic movepool i see this Dino's future as extinct as the real thing
I know it sounds like I'm attacking you (consider it slightly annoyed constructive criticism), but seriously, this is one of the worst ways to judge a Pokemon's potential. We did that in DP when we "built" UU, and that didn't turn out well until we gave up and dumped the 30+ BL Pokemon back into UU.
On Aurorus though: Freeze Dry is only particularly useful on monoattacking sets. I honestly can't see any use for it on a Pokemon that can learn Thunderbolt and Ice Beam unless it doesn't have room for a second attacking move. Sure Freeze Dry hits Water-types a bit harder than Thunderbolt, but Thunderbolt will usually do the job anyway.
EDIT: seeing Hyper Beam say "It's super effective" is probably the most satisfying thing I've ever seen in Pokemon though, that shit is the BEST














