Groudon-Primal @ Red Orb  
Ability: Desolate Land  
Tera Type: Ground  
EVs: 4 HP / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Eruption  
- Earth Power  
- Overheat  
- Protect  

Tornadus @ Flyinium Z  
Ability: Prankster  
Tera Type: Fire  
EVs: 136 HP / 80 Def / 32 SpA / 44 SpD / 188 Spe  
Modest Nature  
IVs: 0 Atk  
- Taunt  
- Tailwind  
- Bleakwind Storm  
- Protect  

Gengar-Mega @ Gengarite  
Ability: Shadow Tag  
Tera Type: Ghost  
EVs: 156 HP / 4 Def / 68 SpA / 28 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Icy Wind  
- Taunt  
- Protect  

Xerneas @ Power Herb  
Ability: Fairy Aura  
Shiny: Yes  
Tera Type: Fairy  
EVs: 124 HP / 12 Def / 116 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Dazzling Gleam  
- Geomancy  
- Protect  

Iron Hands @ Assault Vest  
Ability: Quark Drive  
Tera Type: Grass  
EVs: 188 HP / 164 Atk / 28 Def / 124 SpD / 4 Spe  
Adamant Nature  
IVs: 0 SpA  
- Fake Out  
- Wild Charge  
- Close Combat  
- Volt Switch  

Stakataka @ Clear Amulet  
Ability: Beast Boost  
Tera Type: Ghost  
EVs: 252 HP / 252 Atk / 4 SpD  
Lonely Nature  
IVs: 15 Def / 0 Spe  
- Rock Slide  
- Gyro Ball  
- Wide Guard  
- Trick Room