Altaria-Mega @ Altarianite  
Ability: Pixilate  
Level: 50  
EVs: 244 HP / 124 Def / 28 SpD / 112 Spe  
Bold Nature  
IVs: 0 Atk  
- Roost  
- Hyper Voice  
- Toxic  
- Cotton Guard  

Magnezone @ Electrium Z  
Ability: Magnet Pull  
Level: 50  
EVs: 108 HP / 4 Def / 196 SpA / 28 SpD / 172 Spe  
Modest Nature  
IVs: 0 Atk  
- Thunderbolt  
- Toxic  
- Flash Cannon  
- Hidden Power [Fire]  

Porygon2 @ Eviolite  
Ability: Analytic  
Level: 50  
EVs: 244 HP / 164 Def / 100 SpD  
Relaxed Nature  
IVs: 0 Atk  
- Ice Beam  
- Discharge  
- Foul Play  
- Recover  

Mamoswine @ Focus Sash  
Ability: Thick Fat  
Level: 50  
EVs: 252 Atk / 252 Spe  
Adamant Nature  
- Earthquake  
- Ice Shard  
- Icicle Spear  
- Stealth Rock  

Tapu Fini @ Wiki Berry  
Ability: Misty Surge  
Level: 50  
EVs: 252 HP / 12 Def / 4 SpA / 4 SpD / 236 Spe  
Bold Nature  
IVs: 0 Atk  
- Taunt  
- Surf  
- Moonblast  
- Nature's Madness  

Celesteela @ Leftovers  
Ability: Beast Boost  
Level: 50  
EVs: 252 HP / 164 Def / 92 SpD  
Relaxed Nature  
- Flamethrower  
- Leech Seed  
- Protect  
- Heavy Slam