Groudon @ Red Orb
Ability: Drought
EVs: 252 HP / 56 Def / 200 SpD
Relaxed Nature
- Stealth Rock
- Precipice Blades
- Lava Plume
- Roar

Skarmory @ Leftovers
Ability: Sturdy
EVs: 252 HP / 232 Def / 24 Spe
Bold Nature
IVs: 0 Atk
- Counter
- Roost
- Whirlwind
- Spikes

Cresselia (F) @ Leftovers
Ability: Levitate
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Moonblast
- Thunder Wave
- Moonlight
- Toxic

Blissey (F) @ Leftovers
Ability: Natural Cure
EVs: 252 Def / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Wish
- Protect
- Toxic
- Flamethrower

Xerneas @ Choice Scarf
Ability: Fairy Aura
EVs: 76 Def / 248 SpA / 184 Spe
Rash Nature
- Moonblast
- Megahorn
- Aromatherapy
- Focus Blast

Arceus-Rock @ Stone Plate
Ability: Multitype
EVs: 248 HP / 8 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Judgment
- Will-O-Wisp
- Recover
- Defog