Ok I'll try this then
Lol
articuno @ choice specs
Ability : snowcloak
Nature : mild
Moves : hail/ ice beam/ protect / hurricane
EVs : sp.attk 247/speed 252 / attack 11
Not a counter, since Articuno can't switch into Outrage. Flygon still outspeeds Articuno and nukes it with Outrage anyway if Articuno switched into the first Outrage. And why are you even using Choice items on stuff that uses support moves? Choice items leave the user stuck on the last move it used until it switches. Manual hail is bad because Snow Warning (which sets hail upon entering battle) outclasses it.
Metagross:

-Meteor Mash
-Zen Headbutt
-Ice Punch
-Hammer Arm
Nature: Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Metagrossite
Ability: Clear Body
I'm sure everyone here knows what Metagross can do to Articuno: resist its STABs and KO back with Meteor Mash.