Mega Lop + Protean Gren

Landorus-Therian @ Rockium Z
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Stealth Rock
- Swords Dance
- Earthquake
- Stone Edge

Zapdos @ Leftovers
Ability: Pressure
EVs: 248 HP / 244 Def / 16 Spe
Bold Nature
IVs: 0 Atk
- Thunderbolt
- Heat Wave
- Defog
- Roost

Magearna @ Assault Vest
Ability: Soul-Heart
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Fleur Cannon
- Flash Cannon
- Aura Sphere
- Volt Switch

Lopunny-Mega (F) @ Lopunnite
Ability: Scrappy
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Fake Out
- High Jump Kick
- Return
- Ice Punch

Greninja @ Life Orb
Ability: Protean
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
IVs: 30 Atk
- Ice Beam
- Hidden Power [Fire]
- Gunk Shot
- Spikes

Garchomp @ Choice Scarf
Ability: Rough Skin
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Dragon Claw
- Stone Edge
- Poison Jab