Double dance Skarm - AG

Arceus-Fighting @ Fist Plate
Ability: Multitype
EVs: 252 HP / 252 Def
Bold Nature
IVs: 0 Atk
- Thunder Wave
- Swagger
- Dark Pulse
- Recover

Jirachi @ Choice Scarf
Ability: Serene Grace
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Iron Head
- Heart Stamp
- Trick
- Healing Wish

Yveltal @ Leftovers
Ability: Dark Aura
EVs: 216 HP / 4 Def / 252 SpD / 36 Spe
Calm Nature
IVs: 0 Atk
- Dark Pulse
- Roost
- Disable
- Hurricane

Groudon-Primal @ Red Orb
Ability: Desolate Land
EVs: 252 HP / 76 Def / 180 SpD
Relaxed Nature
- Thunder Wave
- Rock Slide
- Lava Plume
- Fissure

Greninja (M) @ Expert Belt
Ability: Protean
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Dark Pulse
- Attract
- Bounce
- Rock Slide

Skarmory @ Leftovers
Ability: Weak Armor
EVs: 252 Atk / 252 Spe
- Swords Dance
- Agility
- Brave Bird
- Roost