Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 28 HP / 232 Def / 248 Spe  
Timid Nature  
IVs: 0 Atk  
- Origin Pulse  
- Thunder  
- Ice Beam  
- Calm Mind  

Lugia @ Leftovers  
Ability: Multiscale  
EVs: 56 HP / 180 Def / 84 SpA / 188 SpD  
Modest Nature  
IVs: 0 Atk  
- Substitute  
- Toxic  
- Roost  
- Psyshock  

Marshadow @ Choice Scarf  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Shadow Sneak  
- Close Combat  
- Spectral Thief  
- Knock Off  

Arceus-Steel @ Steelium Z  
Ability: Multitype  
EVs: 112 HP / 148 Atk / 104 Def / 144 SpD  
Adamant Nature  
- Iron Head  
- Swords Dance  
- Defog  
- Recover  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 100 HP / 252 SpA / 8 SpD / 148 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Focus Blast  
- Psyshock  

Kangaskhan-Mega (F) @ Kangaskhanite  
Ability: Inner Focus  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Power-Up Punch  
- Earthquake  
- Crunch  
- Return