Swarm
A thousand legs, a single purpose.
Tiers
Tier I
2 Bug Pokémon
Team Bug damage ×1.15
Tier II
3 Bug Pokémon
Team Bug damage ×1.3 · Team energy ×1.1
Pokémon that count toward it
Caterpie
Metapod
Butterfree
Weedle
Kakuna
Beedrill
Paras
Parasect
Venonat
Venomoth
Scyther
Pinsir
Ledyba
Ledian
Spinarak
Ariados
Yanma
Pineco
Forretress
Scizor
Shuckle
Heracross
Wurmple
Silcoon
Beautifly
Cascoon
Dustox
Surskit
Masquerain
Nincada
Ninjask
Shedinja
Volbeat
Illumise
Anorith
Armaldo
Yanmega
See how the synergies fit together across the whole roster in the zones you will cross.