OU Tourny help

[Cookies Kill You]

The kids are all around my range of skill but I'm looking to win this tourny so if you could help me it would be very helpfull

Heatran (M) @ Air Balloon
Trait: Flash Fire
EVs: 180 Def / 132 SAtk / 180 SDef / 16 Spd
Naive Nature (+Spd, -SDef)
- Stealth Rock
- Earth Power
- Overheat
- Explosion


Garchomp (M) @ Yache Berry
Trait: Sand Veil
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Swords Dance
- Earthquake
- Outrage
- Stone Edge


Latios (M) @ Leftovers
Trait: Levitate
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Psychic
- Dragon Pulse
- Calm Mind
- Recover


Thundurus (M) @ Life Orb
Trait: Prankster
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Grass Knot
- Nasty Plot
- Thunderbolt
- Hidden Power [Ice]


Dusclops (M) @ Eviolite
Trait: Pressure
EVs: 252 HP / 128 Def / 128 SDef
Careful Nature (+SDef, -SAtk)
- Seismic Toss
- Will-O-Wisp
- Pain Split
- Toxic


Weavile (M) @ Life Orb
Trait: Pressure
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Ice Shard
- Brick Break
- Night Slash
- Swords Dance

 

[a fairy]

Note: In order to have Overheat on Heatran it must be of the Quiet nature.