What is the most useful poison sweeper, as of Gen 7?

Question

I was thinking either Crobat or Muk. It's tough to decide. I really just want a good Poison type that deals big hits.

Answer 1

Gengar.
Gengar has great Sp. Atk and Speed, while Crobat has low attack.
It has Cursed Body, and Mega Gengar has Shadow Tag, one of the best abilities. It learns many amazing moves, such as Will-O-Wisp, Hex, Sludge Bomb, and Taunt. Also it fills the role of stallbreaker, wallbreaker, and revenge killer in a team.

Comments

If you’re counting Mega forms, agreed; but honourable mention to Naganadel which is very good in its own right.

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Yes, Naganadel has 127 SpA, and some other good stats, but I forgot this poisonous mosquito