zygarde c is broken

Zygarde @ Leftovers
Ability: Power Construct
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Glare
- Thousand Arrows
- Rest
- Sleep Talk

Groudon-Primal @ Red Orb
Ability: Desolate Land
EVs: 248 HP / 212 SpD / 48 Spe
Careful Nature
- Roar
- Stealth Rock
- Rock Slide
- Earthquake

Yveltal @ Choice Scarf
Ability: Dark Aura
EVs: 4 Atk / 252 SpA / 252 Spe
Rash Nature
- U-turn
- Dark Pulse
- Oblivion Wing
- Knock Off

Gengar @ Gengarite
Ability: Cursed Body
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Wave
- Substitute
- Disable
- Hex

Arceus-Fairy @ Pixie Plate
Ability: Multitype
EVs: 248 HP / 168 Def / 92 Spe
Timid Nature
IVs: 0 Atk
- Judgment
- Defog
- Toxic
- Recover

Ferrothorn @ Leftovers
Ability: Iron Barbs
EVs: 248 HP / 8 Atk / 252 SpD
Sassy Nature
IVs: 0 Spe
- Leech Seed
- Spikes
- Protect
- Gyro Ball