Mega Tyranitar team

Tyranitar @ Tyranitarite
Ability: Sand Stream
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Dance
- Stone Edge
- Crunch
- Fire Punch

Talonflame @ Sharp Beak
Ability: Gale Wings
EVs: 88 HP / 252 Atk / 168 Spe
Jolly Nature
- Brave Bird
- Flare Blitz
- Swords Dance
- Roost

Keldeo-Resolute @ Choice Specs
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Hydro Pump
- Secret Sword
- Icy Wind
- Scald

Skarmory @ Leftovers
Ability: Sturdy
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Roost
- Spikes
- Counter
- Taunt

Chansey @ Eviolite
Ability: Natural Cure
EVs: 4 HP / 252 Def / 252 SpD
Bold Nature
IVs: 0 Atk
- Toxic
- Soft-Boiled
- Seismic Toss
- Heal Bell

Latios @ Choice Scarf
Ability: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Psyshock
- Defog
- Trick