I think Ice Latios is better than Ice Nidoking but Kyub and Mamoswine are generally far better so if you really want Ice STAB I'd go with one of them, though you could opt for a better Freeze Dry user than Mamoswine maybe as Freeze Dry is epic in this meta.
The best Freeze Dry user is still Mega Glalie which benefits from a few typings and if you don't wanna use up your mega the next best is probably Articuno or Vanilluxe.
None of them are horrible with an additional typing (most would probs appreciate less SR damage) so they have a useable niche now but are still mediocre at best.
I experimented with Freeze Dry the first time Hidden Type had a ladder, and part of the problem is that everything except Mamoswine and Lapras is either fast-but-not-fast-enough and fragile and otherwise pretty meh or is slow and
still fragile, if only due to typing. (And you can't really fix Aurorus' typing -it
will have a double weaknesses, if not multiple of them, no matter what you add) I never gave Lapras a shot so I couldn't speak to its viability -maybe on a stall team or something- but honestly I suspect Mamoswine remains the only viable Freeze Dry user.
I even experimented with Ground Articuno, and while it wasn't
awful as a pseudo-stall choice, having decent Special bulk, Roost, Defog, and a typing that makes Stealth Rock almost bearable, the only set I could find that seemed even vaguely sensible was Freeze Dry/U-Turn/Roost/Defog. I dunno, maybe I'm underestimating the value to stall it presents?
But Mamoswine is probably the most generally viable user regardless.
Mega Glalie has the key flaw that it's kind of a mediocre Mega when there are
amazing Mega choices out there. If your team ends up with no Mega slots in the first five Pokemon and you want a Freeze Dry user, sure, I guess give it a shot, but this seems unlikely to me.
Plus everything with Freeze Dry is basically a neon sign of "I'm here to use Freeze Dry!" other than Mamoswine and maybe Lapras. It makes it difficult to actually use Freeze Dry to good effect....
Yeah this is quite cool. Exploud, Kangaskan and Miltank can pull it off too.
However unfortunately this coverage isn't unresisted in this meta, as any combination of two fighting resists and a normal resist can take it. But it is still really darn good.
I'd like to point out that means a combination of either Rock or Steel with any two of Fairy (Impossible to add), Bug (Very few things actually run this), Psychic (Largely Bad Ghost), Poison (An inferior Steel for the majority of Pokemon) or Flying. This is very unlikely to crop up, and is even less likely to crop up as
viable.
Specifically the Pokemon that even
can run this are...
-The myriad Bug/Flying Pokemon that are
completely awful. And I've crunched the possibilities: there is no type combination that includes Bug/Flying and lacks a double weakness.
-The myriad Bug/Poison Pokemon that are
also completely awful. At least there are acceptable type combinations that include Bug/Poison, but people don't run Venomoth in Hidden Type or anything.
-Crobat. To be entirely fair Steel Crobat is something I've seen people try, but Stoutland gets Fire Fang.
-Metagross. (And other Psychic/Steels, but whatever) Flying Metagross is a legitimate possibility and walls the Scrappy set. Again, Fire Fang is a thing.
-Aerodactyl. I can't imagine a reason for Aerodactyl to run any of Poison, Bug, or Psychic.
-Steel Togekiss is a thing that actually happens. Again, Fire Fang. You won't see Rock Togekiss if for no other reason than because Bullet Punch will instagib it and resisting this Scrappy set is about the only good thing about it.
-The multiple Bug/Steel Pokemon. I
think I've seen Flying Forretress, but that's about all i'm thinking of; it's much more normal to try to reduce the Fire weakness to a manageable level, which obviates fully resisting the Scrappy set. Also, Fire Fang.
-Diancie and Carbink. Neither of these seems to be viable in Hidden Type. I could see Diancie running either of Psychic or Flying, but I'm not convinced those are great adds for it and if it's not viable it's not relevant.
-Xatu, Swoobat, Sigilyph,
Lugia. While Steel seems to be the most common typing on these when I see them, I don't see them very often and they don't seem very good. Also, Fire Fang.
-Armaldo, Crustle, Shuckle. I've never seen any of these in Hidden Type, which now that I think about it puzzles me a little... not even Shuckle? Odd. Regardless, Flying is the only one of the relevant adds that seems reasonably plausible (Well, maybe Poison on Crustle), and I have my doubts that it would be the choice. Double Rock weakness is a problem, and supporting your Scrappy set with Stealth Rock would seriously screw with it anyway.
-Solrock and Lunatone. They're Solrock and Lunatone, they're automatically bad.
-Gardevoir and Mr. Mime. Nobody is going to add Rock to either of them, and if they add Steel (Which I don't think is very optimal anyway) then we're right back to Fire Fang.
.... so basically Diancie and Shuckle might wall you after you've added Fire Fang, and that's about it for vaguely plausibly competitive possibilities.
tl;dr: Add Fire Fang to Scrappy set, nothing competitive walls you by type.
. Ground/Flying/Dragon hidden types seem to be popular as well as mons like Lando that can't get rid of their Ice weakness, which gives Adaptability Ice Beam the power to OHKO many major threats. I'm not sure yet how Scarf Ice Porygon-Z compares with Scarf Dark Diggersby aside from Z outspeeding +1 Jolly Dragonite when Diggersby can't, so I'll need to look into that more. Aside from SR, Porygon-Z is already somewhat of a glass cannon, so its weaknesses from its new typing aren't too much of an issue. Plus, Ghost being very common for Porygon-Z gives it some protection from Fighting moves. I'm still somewhat new to this meta though, so I don't know if this is really viable or not.
