[OU] Mega Aerodactyl + Serperior

Aerodactyl-Mega @ Aerodactylite
Ability: Pressure
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Aerial Ace
- Stone Edge
- Aqua Tail
- Pursuit

Serperior (F) @ Leftovers
Ability: Contrary
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk / 30 SpA / 30 Spe
- Leaf Storm
- Dragon Pulse
- Hidden Power [Fire]
- Glare

Landorus-Therian @ Rocky Helmet
Ability: Intimidate
EVs: 252 HP / 240 Def / 8 SpD / 8 Spe
Impish Nature
- Earthquake
- U-turn
- Toxic
- Stealth Rock

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

Jirachi @ Choice Scarf
Ability: Serene Grace
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Iron Head
- Ice Punch
- U-turn
- Healing Wish

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