Cofagrigus + Slaking OU Gen7

Cofagrigus @ Eject Button
Ability: Mummy
EVs: 248 HP / 16 Def / 28 SpA / 216 SpD
Calm Nature
IVs: 0 Atk
- Will-O-Wisp
- Toxic
- Hex
- Haze

Volcarona @ Buginium Z
Ability: Swarm
EVs: 252 HP / 252 Def / 4 Spe
Bold Nature
IVs: 0 Atk
- Quiver Dance
- Giga Drain
- Flamethrower
- Bug Buzz

Slaking @ Figy Berry
Ability: Truant
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Substitute
- Power-Up Punch
- Pursuit
- Chip Away

Greninja-Ash @ Choice Band
Ability: Battle Bond
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Water Shuriken
- Acrobatics
- Shadow Sneak
- Night Slash

Crobat @ Power Herb
Ability: Infiltrator
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Sky Attack
- Acrobatics
- Roost
- Leech Life

Diancie-Mega @ Diancite
Ability: Magic Bounce
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Diamond Storm
- Earth Power
- Protect
- Moonblast