Tapu Koko @ Choice Specs  
Ability: Electric Surge  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Volt Switch  
- Dazzling Gleam  
- Hidden Power [Fire]  
- Thunderbolt  

Latios @ Choice Scarf  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Defog  
- Draco Meteor  
- Psyshock  
- Trick  

Naganadel @ Dragonium Z  
Ability: Beast Boost  
Shiny: Yes  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Draco Meteor  
- Thunderbolt  
- Sludge Wave  

Venusaur-Mega @ Venusaurite  
Ability: Overgrow  
EVs: 248 HP / 124 Def / 136 SpD  
Relaxed Nature  
- Giga Drain  
- Sludge Bomb  
- Earthquake  
- Synthesis  

Landorus-Therian @ Rocky Helmet  
Ability: Intimidate  
EVs: 248 HP / 4 Atk / 216 Def / 40 Spe  
Impish Nature  
- Stealth Rock  
- Earthquake  
- Hidden Power [Ice]  
- Knock Off  

Magearna @ Assault Vest  
Ability: Soul-Heart  
EVs: 248 HP / 184 SpA / 76 SpD  
Modest Nature  
IVs: 0 Atk / 16 Spe  
- Fleur Cannon  
- Flash Cannon  
- Hidden Power [Fire]  
- Volt Switch