Weezing @ Black Sludge
Nature: Bold
Ability: levitate
EVs: 252 HP/252 Def/4 SShould be Wil O' Wisp
-Sludge Bomb
-Clear Smog
-Fire Blast
I figured Weezing should automatically be on any mono poison team due to its awesome physical bulk and levitate.
Drapion @ Black Sludge
Nature: Impish
Evs: 252Hp/252Def/4Atk
-Knock Off
-Toxic Spikes
-Earthquake
-Cross Poison
Drapion is another that should just automatically be on a mono poison team due it being half dark. I like the sniper/cross poison combination as well as having Toxic Spikes. Earthquake is literally just for Heatran probably the biggest threat to the team.
Tentacruel @ Assault Vest
Nature: Bold
Ability: Liquid Ooze
Evs:252Hp /240Def 16/Spd
-Rapid Spin
-Scald
-Sludge Bomb
-Knock Off
Assault Vest Tentacruel is verry good at taking special hits. It's a decent rapid spinner that can knock off items as well as burn with scald. I figured there was no reason to not use it for this team.
Venusaur @ Venusaurite
Nature: Sassy
Ability: Over Grow (Thick Fat)
Evs: 252Hp/ 252Spdef/ 4Spatck
-Giga Drain
-Earthquake
-Leech Seed
-Protect
Mega Venusaur is just evil from my past experience with it. Leech seed/Toxic spikes/Protect can stall put a lot of pokemon. Also I needed a mega for this team and mega Gengar is banned and I don't think Mega Beedril would fit this team.
Gengar @ Black Sludge
Nature: Timid
Ability: Levitate
Evs: 252Spatk/ 252Spe /4hp
-Substitute
-Disable
-Shadow Ball
-Thunder Bolt
Sub/Disable Gengar is another absolute evil pokemon. Gengar can be verry unpredictable and that's why I chose it.
Ok this is where I need the most help I can't think of what the last Pokemon Should be. I was thinking of using Nidoking or Nidoqueen in the last slot but I can't decide wich one.