Arceus @ Silk Scarf  
Ability: Multitype  
Tera Type: Ice  
EVs: 252 HP / 252 Atk / 4 SpA  
Brave Nature  
IVs: 0 Spe  
- Swords Dance  
- Trick Room  
- Extreme Speed  
- Tera Blast  

Venusaur-Mega @ Leftovers  
Ability: Thick Fat  
Tera Type: Electric  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Leech Seed  
- Protect  
- Substitute  
- Toxic  

Necrozma-Ultra @ Focus Sash  
Ability: Neuroforce  
Tera Type: Dragon  
EVs: 252 HP / 252 Atk / 4 SpD  
Brave Nature  
IVs: 0 Spe  
- Trick Room  
- Sunsteel Strike  
- Outrage  
- Earthquake  

Groudon-Primal @ Choice Band  
Ability: Desolate Land  
Tera Type: Water  
EVs: 252 HP / 252 Atk / 4 SpD  
Brave Nature  
IVs: 0 Spe  
- Precipice Blades  
- Heat Crash  
- Crunch  
- Stone Edge  

Diancie-Mega @ Power Herb  
Ability: Magic Bounce  
Tera Type: Rock  
EVs: 248 HP / 252 SpA / 8 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Trick Room  
- Meteor Beam  
- Earth Power  
- Moonblast  

Dialga-Origin @ Air Balloon  
Ability: Pressure  
Tera Type: Steel  
EVs: 252 HP / 252 SpA / 4 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Trick Room  
- Stealth Rock  
- Steel Beam  
- Draco Meteor