Mega Altaria

Altaria @ Altarianite
Ability: Cloud Nine
EVs: 80 HP / 252 SpA / 176 Spe
Modest Nature
IVs: 0 Atk
- Hyper Voice
- Draco Meteor
- Fire Blast
- Protect

Heatran @ Safety Goggles
Ability: Flash Fire
EVs: 48 HP / 252 SpA / 208 Spe
Modest Nature
IVs: 0 Atk
- Substitute
- Heat Wave
- Earth Power
- Protect

Rotom-Wash @ Sitrus Berry
Ability: Levitate
EVs: 252 HP / 100 Def / 116 SpA / 40 SpD
Modest Nature
- Hydro Pump
- Thunderbolt
- Will-O-Wisp
- Protect

Ferrothorn @ Lum Berry
Ability: Iron Barbs
EVs: 252 HP / 172 Atk / 84 Def
Brave Nature
IVs: 0 Spe
- Gyro Ball
- Power Whip
- Leech Seed
- Protect

Kyurem-Black @ Choice Scarf
Ability: Teravolt
EVs: 208 Atk / 48 SpA / 252 Spe
Naive Nature
- Dragon Claw
- Ice Beam
- Earth Power
- Fusion Bolt

Landorus-Therian @ Assault Vest
Ability: Intimidate
EVs: 252 HP / 136 Atk / 120 SpD
Adamant Nature
- Earthquake
- Stone Edge
- Superpower
- U-turn