[Nyara]

Articuno does better the work, STAB Flying and Ice is a good combination, and Articuno just need to set up a Substitute to wreak havoc under the hail. Yeah, not the more stronger Blizzard of the world, but it's hard to break the substitute of an Articuno, so, he'll usually have two-three or even four free turns to just add a lot of damage to whatever thing. Add it the ocassional confusion rate of Hurricane, possible freezes from Blizzard, PP depleting, and roost to stay healthy, and Articuno will just doing a lot of damage for long, long time.

Set up with an Ice-Type Pokémon is really hard, anyway, it's better to just going with Choice Items or Bulky Sweeping (like Articuno), or better, if you're really wanting the Ice-Type sweep, then make it by the means of Baton Pass, over there are a lot of excelent Baton Passers who loves hail, too.

I employ Masquerain as master baton passer, he use Intimidate to criple physical attackers, and can come in glory against any Figthing attack, too, set up Quiver Dance, destroy something with Hydro Pump or Bug Buzz (or Air Slash if you're really needing the Figthing Checker), or just Baton Pass it to Articuno.