OU team

Gyarados @ Gyaradosite
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Crunch
- Waterfall
- Ice Fang

Magnezone @ Choice Specs
Ability: Magnet Pull
EVs: 252 SpA / 8 SpD / 248 Spe
Timid Nature
- Hidden Power [Fire]
- Thunderbolt
- Volt Switch
- Flash Cannon

Amoonguss @ Black Sludge
Ability: Regenerator
EVs: 248 HP / 164 Def / 96 SpD
Bold Nature
- Spore
- Giga Drain
- Clear Smog
- Foul Play

Latias @ Life Orb
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Recover
- Draco Meteor
- Psyshock
- Defog

Heatran @ Leftovers
Ability: Flash Fire
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Stealth Rock
- Magma Storm
- Flash Cannon
- Earth Power

Tornadus-Therian @ Assault Vest
Ability: Regenerator
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Knock Off
- U-turn
- Hurricane
- Heat Wave