Mega Hera

Heracross @ Heracronite
Ability: Moxie
EVs: 240 HP / 136 Atk / 132 Spe
Adamant Nature
- Close Combat
- Pin Missile
- Rock Blast
- Substitute

Rotom-Wash @ Leftovers
Ability: Levitate
EVs: 248 HP / 252 Def / 8 SpD
Bold Nature
IVs: 30 Spe
- Volt Switch
- Hydro Pump
- Will-O-Wisp
- Pain Split

Metagross @ Assault Vest
Ability: Clear Body
EVs: 252 HP / 160 Atk / 96 SpD
Adamant Nature
- Pursuit
- Meteor Mash
- Bullet Punch
- Earthquake

Klefki @ Leftovers
Ability: Prankster
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Spikes
- Thunder Wave
- Magnet Rise
- Play Rough

Landorus-Therian @ Leftovers
Ability: Intimidate
EVs: 248 HP / 144 Def / 28 SpD / 88 Spe
Impish Nature
- Stealth Rock
- Earthquake
- U-turn
- Stone Edge

Serperior @ Leftovers
Ability: Contrary
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Leaf Storm
- Dragon Pulse
- Hidden Power [Fire]
- Glare