Slowbro-Mega @ Slowbronite  
Ability: Regenerator  
Tera Type: Water  
EVs: 248 HP / 216 Def / 44 SpD  
Relaxed Nature  
IVs: 0 Atk  
- Toxic  
- Ice Beam  
- Slack Off  
- Iron Defense  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Ground  
EVs: 248 HP / 192 Atk / 56 SpD / 12 Spe  
Adamant Nature  
- Flare Blitz  
- Brave Bird  
- Earthquake  
- Defog  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
Tera Type: Water  
EVs: 248 HP / 8 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Power Whip  
- Spikes  
- Leech Seed  
- Knock Off  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
Tera Type: Dark  
EVs: 204 Def / 80 SpA / 224 Spe  
Timid Nature  
- Foul Play  
- Oblivion Wing  
- Defog  
- U-turn  

Groudon-Primal @ Red Orb  
Ability: Drought  
Tera Type: Ground  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Eruption  
- Precipice Blades  
- Stone Edge  
- Stealth Rock  

Eternatus @ Power Herb  
Ability: Pressure  
Tera Type: Fairy  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Meteor Beam  
- Dynamax Cannon  
- Recover  
- Flamethrower