CM Gira

If UCan't Beat 'em (Giratina) @ Leftovers
Ability: Pressure
EVs: 252 HP / 4 Def / 252 Spe
Timid Nature
IVs: 0 Atk
- Substitute
- Calm Mind
- Shadow Ball
- Protect

Then U Pop 'em (Arceus-Dark) @ Dread Plate
Ability: Multitype
EVs: 248 HP / 240 Def / 20 Spe
Bold Nature
IVs: 0 Atk
- Judgment
- Recover
- Will-O-Wisp
- Refresh

U Can't Stand 'em (Gengar-Mega) @ Gengarite
Ability: Shadow Tag
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Bomb
- Taunt
- Substitute
- Shadow Ball

Then U Drop 'em (Arceus-Ground) @ Earth Plate
Ability: Multitype
EVs: 248 HP / 8 Def / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Judgment
- Recover
- Ice Beam

U Can't Man 'em (Xerneas) @ Leftovers
Ability: Fairy Aura
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Moonblast
- Defog
- Toxic
- Aromatherapy

Then U Mop 'em (Arceus-Poison) @ Poisonium Z
Ability: Multitype
EVs: 248 HP / 8 Def / 156 SpD / 96 Spe
Jolly Nature
- Poison Jab
- Will-O-Wisp
- Recover
- Stealth Rock