Diancie-Mega @ Choice Band
Ability: Huge Power
EVs: 52 HP / 252 Atk / 204 Spe
Adamant Nature
- Extreme Speed
- Water Shuriken
- Pursuit
- Beat Up
Arceus @ Spooky Plate
Ability: Mold Breaker
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Fusion Flare
- Tail Glow
- Boomburst
- Judgment
Giratina @ Leftovers
Ability: Magic Bounce
EVs: 248 HP / 100 Def / 160 Spe
Timid Nature
IVs: 0 Atk
- Substitute
- Baton Pass
- Curse
- Roost
Xerneas @ Leftovers
Ability: Wonder Guard
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Stealth Rock
- Substitute
- Moonblast
- Baton Pass
Suicune @ Safety Goggles
Ability: Wonder Guard
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Defog
- Aromatherapy
- Scald
- Recover
Blissey (F) @ Pixie Plate
Ability: Imposter
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Sleep Talk
- Whirlwind
- Chatter
- Soft-Boiled