Groudon-Primal @ Red Orb
Ability: Desolate Land
EVs: 252 HP / 252 Atk / 4 SpD
Brave Nature
IVs: 0 Spe
- Rock Slide
- Precipice Blades
- Fire Punch
- Protect
Rayquaza-Mega @ Life Orb  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- V-create  
- Extreme Speed  
- Protect

Yveltal @ Darkinium Z
Ability: Dark Aura
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Snarl
- Tailwind
- Foul Play
- Knock Off

Arceus @ Aguav Berry
Ability: Multitype
EVs: 252 HP / 228 Atk / 8 Def / 20 Spe
Impish Nature
- Swords Dance
- Extreme Speed
- Shadow Claw
- Trick Room

Magearna @ Aguav Berry
Ability: Soul-Heart
EVs: 252 HP / 72 Def / 112 SpA / 72 SpD
Relaxed Nature
IVs: 0 Atk / 0 Spe
- Dazzling Gleam
- Hidden Power [Ground]
- Protect
- Trick Room

Amoonguss @ Focus Sash
Ability: Regenerator
EVs: 248 HP / 200 Def / 8 SpA / 52 SpD
Calm Nature
IVs: 0 Atk / 0 Spe
- Spore
- Rage Powder
- Clear Smog
- Protect