Steelium-Zygarde Mono-Blue-ish

Zygarde @ Steelium Z
Ability: Aura Break
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Iron Tail
- Thousand Arrows
- Dragon Dance
- Extreme Speed

Mew @ Rocky Helmet
Ability: Synchronize
Shiny: Yes
EVs: 240 HP / 72 Def / 140 SpD / 56 Spe
Bold Nature
IVs: 0 Atk
- Psychic
- Will-O-Wisp
- Roost
- Defog

Medicham @ Medichamite
Ability: Pure Power
Shiny: Yes
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Fake Out
- High Jump Kick
- Ice Punch
- Thunder Punch

Gliscor @ Toxic Orb
Ability: Poison Heal
Shiny: Yes
EVs: 244 HP / 12 Def / 196 SpD / 56 Spe
Jolly Nature
- Taunt
- Knock Off
- Roost
- Earthquake

Nidoking @ Choice Scarf
Ability: Sheer Force
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Ice Beam
- Earth Power
- Sludge Wave
- Stealth Rock

Rotom-Wash @ Leftovers
Ability: Levitate
EVs: 248 HP / 20 Def / 180 SpD / 60 Spe
Calm Nature
- Volt Switch
- Hydro Pump
- Will-O-Wisp
- Pain Split