Depending on the set, you will have different possible teammates, but there are a few things you want either way to support Volcanion
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Pivots that give Volcanion entry against bulky Steel and/or bulky Ground types
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Speed control / cleaners that appreciates pressure being put on special walls and/or bulky waters
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Stealth Rock to help it wallbreak / pick up kos
- Reliable defensive
counterplay for fast
Electric and Ground types
mons that fit one or more of these criteria are lando-t, torn-t, tapu koko, weavile, ferrothorn, garchomp, clefable, zapdos,...
also
specs volcanion can be a good rain abuser since it spams powerful water stabs without fearing ferrothorn, tapu fini and toxapex thanks to flamethrower, sludge wave and earth power, respectively
Volcanion @ Choice Specs
Ability: Water Absorb
EVs: 252 SpA / 4 SpD / 252 Spe
Modest or Timid Nature
IVs: 0 Atk
- Steam Eruption
- Flamethrower
- Earth Power
- Sludge Wave
choice specs volcanion has nuclear power by itself but needs a good
Defogger by its side to do its job properly, without getting worn down quickly by rocks