Mega Latias Balance

Tyranitar @ Choice Band
Ability: Sand Stream
EVs: 100 HP / 252 Atk / 156 Spe
Adamant Nature
- Stone Edge
- Crunch
- Superpower
- Pursuit

Clefable @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 172 Def / 84 SpD
Calm Nature
- Calm Mind
- Moonblast
- Soft-Boiled
- Thunder Wave

Skarmory @ Leftovers
Ability: Sturdy
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Iron Head
- Spikes
- Roost
- Whirlwind

Latias @ Latiasite
Ability: Levitate
EVs: 252 HP / 4 SpD / 252 Spe
Timid Nature
- Thunderbolt
- Ice Beam
- Roost
- Calm Mind

Heatran @ Leftovers
Ability: Flash Fire
EVs: 252 HP / 4 SpD / 252 Spe
Timid Nature
- Lava Plume
- Toxic
- Taunt
- Stealth Rock

Keldeo @ Choice Specs
Ability: Justified
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Scald
- Secret Sword
- Hydro Pump
- Icy Wind