Z-Tailwind Beedrill is a bad idea

Beedrill @ Flyinium Z
Ability: Sniper
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Tailwind
- Poison Jab
- Fell Stinger
- X-Scissor

Ferroseed @ Eviolite
Ability: Iron Barbs
EVs: 248 HP / 128 Def / 132 SpD
Sassy Nature
- Stealth Rock
- Leech Seed
- Gyro Ball
- Protect

Magmortar @ Assault Vest
Ability: Vital Spirit
EVs: 60 HP / 252 SpA / 196 Spe
Modest Nature
- Fire Blast
- Thunderbolt
- Focus Blast
- Hidden Power [Grass]

Skuntank @ Black Sludge
Ability: Aftermath
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Defog
- Sucker Punch
- Pursuit
- Poison Jab

Gastrodon @ Leftovers
Ability: Storm Drain
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Scald
- Recover
- Earth Power
- Toxic

Archeops
Ability: Defeatist
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Acrobatics
- Stone Edge
- Earthquake
- Roost