Manaphy @ Waterium Z  
Ability: Hydration  
Tera Type: Water  
EVs: 248 HP / 240 SpA / 20 Spe  
Modest Nature  
IVs: 0 Atk  
- Tail Glow  
- Surf  
- Ice Beam / Energy Ball / Psychic / Toxic / Substitute
- Rest  

Pelipper @ Damp Rock  
Ability: Keen Eye  
Tera Type: Ground  
EVs: 252 HP / 220 Def / 36 SpD  
Relaxed Nature  
- Scald  
- U-turn  
- Roost  
- Defog  

Swampert-Mega @ Swampertite  
Ability: Swift Swim  
Tera Type: Water  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Waterfall  
- Earthquake  
- Flip Turn  
- Ice Punch / Stealth Rock / Toxic