OU Darm Viable?

Darmanitan @ Choice Scarf
Ability: Sheer Force
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Flare Blitz
- Superpower
- Earthquake
- Rock Slide

Ferrothorn @ Leftovers
Ability: Iron Barbs
Shiny: Yes
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
IVs: 0 Spe
- Leech Seed
- Stealth Rock
- Gyro Ball
- Spikes

Scizor @ Leftovers
Ability: Technician
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Roost
- Defog
- Bullet Punch
- U-turn

Heatran @ Choice Scarf
Ability: Flash Fire
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Overheat
- Earth Power
- Lava Plume
- Flash Cannon

Pinsir-Mega @ Pinsirite
Ability: Aerilate
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Quick Attack
- Swords Dance
- X-Scissor
- Return

Azumarill @ Choice Band
Ability: Huge Power
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Aqua Jet
- Waterfall
- Play Rough
- Superpower