Ho-Oh @ Flyinium Z  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 4 Def  
Adamant Nature  
- Curse  
- Brave Bird  
- Sacred Fire  
- Rest  

Gengar-Mega @ Gengarite  
Ability: Shadow Tag  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hidden Power [Ice]  
- Shadow Ball  
- Sludge Wave  
- Thunder  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 SpA / 104 SpD / 152 Spe  
Mild Nature  
- Stealth Rock  
- Overheat  
- Rock Tomb  
- Precipice Blades  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 132 Def / 124 Spe  
Bold Nature  
IVs: 0 Atk  
- Toxic  
- Defog  
- Recover  
- Ice Beam  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
EVs: 72 HP / 252 Def / 184 Spe  
Jolly Nature  
- U-turn  
- Foul Play  
- Defog  
- Toxic  

Magearna @ Leftovers  
Ability: Soul-Heart  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Heal Bell  
- Volt Switch  
- Fleur Cannon  
- Heart Swap