Superpower is illegal on Tyranitar till Poke Bank. Stick to Earthquake or an elemental fang (preferably Ice Fang or Fire Fang).
Claydol isn't available in X/Y. You'll need a harder hitter on the team, like Excadrill. Also, entry hazards are far and few in VGC format, due to the fast pace:
-Earthquake/Drill Run
-Rock Slide
-X-Scissor
-Substitute/Protect
Nature: Adamant
EVs: 60 HP/252 Atk/196 Spe
Item: Life Orb/Chople Berry/Air Balloon
Ability: Sand Rush
The fast pace of doubles leaves Scizor no time for Baton Passing boosts:
-X-Scissor
-Bullet Punch
-Brick Break
-Protect
Nature: Adamant
EVs: 252 HP/252 Atk/4 SDef
Item: Occa Berry
Ability: Technician
You have Ferrothorn as your only Water check, so having a backup one, like Amoonguss, may be a better idea for this team, though I don't know who to replace:
-Giga Drain
-Spore
-Rage Powder
-Protect/Sludge Bomb
Nature: Calm/Sassy
EVs: 252 HP/4 Def/252 SDef
Item: Sitrus Berry/Mental Herb
Ability: Regenerator
I shouldve mentioned I was building for pokebank.