Articuno @Life Orb Modest nature.
252 Hp, 252 Sp At, 6 Sp def
Ideal lvl 100 Stats: 384 Hp, 236 Def, 317 Sp. At 287 Sp. Def, 206 Spd
(We don't care about it's Attack Stat)
Articuno's type is good offensively, and while some would want a coverage move, Articuno can manage since Ice/Flying cover each other decently. However, it also has very good defenses, especially Special Defense. Unfortunately, it's base Special Attack is pretty average, and it's too slow to keep up with most other offensive Pokemon. This moveset, however, is an effective solution to this, a bulky speed booster allowing Articuno to max out it's Special Attack and place it at much higher levels, while also letting it take advantage of it's bulk, and finally, resolving it's speed issues. Articuno's defensive typing is also quite poor, but this set can help itself with that; Common users of Rock-Type Moves(Besides the Rock Type itself) are either Fighting or Ground Type, which get nailed by it's STAB. Since Roost negates Flying for a turn, it can negate it's Electric-type weakness with using Agility; this is great with it's special defense, as not even Zapdos can KO Articuno in two hits with Thunderbolt. Finally, a good amount of Fire Types cannot stomach Hurricane; either being too frail, or having a secondary type weak to flying, such as Volcarona.