Personally I would not use this Articuno, it's not a very good competitive pokemon anyway. If your talking about the in-game then it's fine.
Here is a competitive setup :)
Item: Life Orb
EV:
252 Sp. Atk
252 Spd
4 Sp.Def/Def
Moveset
Ice Beam/Blizzard (Blizzard has higher power but lower accuracy)
Hurricane
Roost
Ancient Power
If you want a competitive pokemon go with Mamoswine.
Item: Life Orb
EV:
252 Atk
252 Spd
4 HP
Moveset
Icicle Crash
Ice Shard
Earthquake
Superpower
Goodluck!
Here is a competitive setup :)
Item: Life Orb
EV:
252 Sp. Atk
252 Spd
4 Sp.Def/Def
Moveset
Ice Beam/Blizzard (Blizzard has higher power but lower accuracy)
Hurricane
Roost
Ancient Power
If you want a competitive pokemon go with Mamoswine.
Item: Life Orb
EV:
252 Atk
252 Spd
4 HP
Moveset
Icicle Crash
Ice Shard
Earthquake
Superpower
Goodluck!