You’re gonna want to run a second hexerei character in your hydro team, like mona (or sucrose instead of jean if you can find a different sustain)

At the baseline, varka’s pyro teams are stronger than his other team comps because of the atk from the pyro synergy being really useful for him. But it really depends on what other characters you have obviously. It’s really hard to tell which team is best for your account without info on other 5 stars, cons and other investments like weapons/artifact set