
The best moveset for Venusaur in the current competitive meta typically features the moves Sludge Bomb, Protect, Earth Power, Giga Drain.
In the Pokémon Champions meta, Venusaur can be countered by exploiting its weaknesses (fire 2x, flying 2x, ice 2x, psychic 2x) and using effective check/counter teams.
The best item for Venusaur is typically Venusaurite, based on high-level tournament and ladder stats.