[OU] Mega Slowbro balance

Slowbro-Mega @ Slowbronite
Ability: Regenerator
EVs: 252 HP / 80 Def / 176 SpD
Bold Nature
IVs: 0 Atk
- Calm Mind
- Scald
- Psyshock
- Slack Off

Ferrothorn (M) @ Leftovers
Ability: Iron Barbs
EVs: 252 HP / 88 Def / 168 SpD
Relaxed Nature
IVs: 0 Spe
- Leech Seed
- Power Whip
- Gyro Ball
- Spikes

Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 244 HP / 8 Def / 200 SpD / 56 Spe
Careful Nature
- Swords Dance
- Earthquake
- Facade/Knock Off
- Roost

Tyranitar (M) @ Choice Scarf
Ability: Sand Stream
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Superpower
- Stone Edge
- Crunch
- Pursuit

Heatran (M) @ Leftovers
Ability: Flash Fire
EVs: 248 HP / 8 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Stealth Rock
- Lava Plume
- Taunt
- Toxic

Latios @ Life Orb
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Psyshock
- Recover
- Defog