Heatran-Mega @ Heatranite  
Ability: Earth Eater  
Tera Type: Fire  
EVs: 252 HP / 252 SpA / 4 SpD  
Quiet Nature  
IVs: 0 Atk  
- Earth Power  
- Magma Storm  
- Flash Cannon  
- Stealth Rock  

Magearna @ Choice Specs  
Ability: Soul-Heart  
Tera Type: Steel  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Aura Sphere  
- Focus Blast  
- Flash Cannon  

Glimmora @ Focus Sash  
Ability: Toxic Debris  
Tera Type: Rock  
EVs: 252 HP / 4 SpD / 252 Spe  
Jolly Nature  
- Spikes  
- Toxic Spikes  
- Spiky Shield  
- Mortal Spin  

Dondozo @ Leftovers  
Ability: Unaware  
Tera Type: Water  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Rest  
- Sleep Talk  
- Hydro Pump  
- Curse  

Hoopa-Unbound @ Life Orb  
Ability: Magician  
Tera Type: Psychic  
EVs: 252 HP / 252 Atk / 4 SpD  
Brave Nature  
- Trick Room  
- Drain Punch  
- Hyperspace Fury  
- Fire Punch  

Garchomp @ Choice Scarf  
Ability: Rough Skin  
Tera Type: Dragon  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Outrage  
- Earthquake  
- Stone Edge  
- Thunder Fang