Please provide pros/cons etc, as I want to use it without sumwun telling me that everything on my team sucks except Aerodactyl-Mega.
Icky (Tentacruel) (M) @ Choice Specs
Ability: Clear Body
EVs: 252 SpA / 4 SpD / 252 Spe
IVs: 0 Atk
- Sludge Bomb
- Ice Beam
- Giga Drain
A choice specs Gengar does almost the exact same thing but better, so there's no good reason to use Tentacruel when you can use Gengar.