Viridian City Gym
Ground
Gym mechanic
Team Rocket sows bombs: they fall without respite and go off with the charge you have stored, in the middle of sandstorms.
Board effect: Rocket bombs
Types that resist its mechanic
No type is immune to this one — bring raw strength.
Check your team synergies and the zone it closes before the fight.
Waves
2 waves of Pokémon before the badge
Badge: Earth Badge
Zone: Viridian Gym