mega manectric(chansey offense) gen7 ou

Manectric-Mega @ Manectite
Ability: Lightning Rod
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Overheat
- Hidden Power [Ice]
- Thunderbolt
- Volt Switch

Celesteela @ Leftovers
Ability: Beast Boost
EVs: 252 HP / 4 Def / 252 SpD
Sassy Nature
- Leech Seed
- Protect
- Heavy Slam
- Flamethrower

Chansey @ Eviolite
Ability: Natural Cure
EVs: 248 HP / 252 Def / 8 SpD
Bold Nature
- Seismic Toss
- Toxic
- Stealth Rock
- Soft-Boiled

Garchomp @ Choice Scarf
Ability: Rough Skin
EVs: 4 HP / 252 Atk / 252 Spe
Naive Nature
- Earthquake
- Outrage
- Stone Edge
- Fire Blast

Tapu Bulu @ Grassium Z
Ability: Grassy Surge
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Swords Dance
- Horn Leech
- Superpower
- Wood Hammer

Mew @ Leftovers
Ability: Synchronize
EVs: 240 HP / 72 Def / 140 SpD / 56 Spe
Bold Nature
- Psychic
- Will-O-Wisp
- Soft-Boiled
- Stealth Rock