Rillaboom @ Choice Band  
Ability: Grassy Surge  
Tera Type: Grass  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant / Jolly Nature  
- Grassy Glide  
- Wood Hammer  
- U-turn  
- Knock Off / Superpower

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
Tera Type: Rock  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Moonblast  
- Diamond Storm  
- Earth Power / Mystical Fire
- Stealth Rock / Spikes / Earth Power / Mystical Fire