Mega Gyara

Gyarados (M) @ Gyaradosite
Ability: Intimidate
EVs: 252 Atk / 4 SpD
Adamant Nature
- Substitute
- Dragon Dance
- Waterfall
- Earthquake

Landorus-Therian @ Leftovers
Ability: Intimidate
EVs: 252 HP / 220 Def / 36 SpD
Impish Nature
- Stealth Rock
- Earthquake
- Stone Edge
- Knock Off

Clefable (F) @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 252 Def / 4 Spe
Bold Nature
- Calm Mind
- Soft-Boiled
- Moonblast
- Flamethrower

Latias (F) @ Life Orb
Ability: Levitate
EVs: 72 HP / 184 SpA / 252 Spe
Timid Nature
- Draco Meteor
- Defog
- Psyshock
- Roost

Slowbro (M) @ Rocky Helmet
Ability: Regenerator
EVs: 248 HP / 220 Def / 40 SpD
Bold Nature
- Scald
- Fire Blast
- Thunder Wave
- Slack Off

Talonflame (M) @ Choice Band
Ability: Gale Wings
EVs: 248 HP / 252 Atk / 8 Spe
Adamant Nature
- Flare Blitz
- Brave Bird
- U-turn
- Tailwind