Latios-Mega (M) @ Latiosite  
Ability: Levitate  
Tera Type: Dragon  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Draco Meteor  
- Luster Purge  
- Aura Sphere  
- Roost  

Alomomola @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Dragon  
EVs: 4 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Flip Turn  
- Wish  
- Toxic  
- Protect