Volcarona. My rain moth stops sun teams and is good for sponging most grass attacks. Only downside is rocks. Hurricane with quiver danve and bug buzz is deadly.
I second Rain Team Volcarona, it's so fun using that thing! Give it Lum Berry as well and Breloom won't know what hit it. And with both Tentacruel and Starmie being great Rain Team rapid spinners, Stealth Rocks should be manageable.
Volcarona's good to go with Hurricane, but you've got to be careful for enemies also using Water moves or even enemy Hurricanes. I use an all bug team at times for Triples so take me word for it, Volcy's kinda flimsy, especially against rock type moves. Then again, if you can set up drizzle, then Tailwind with Volcarona, it's sweeping time. --- "I am the ONLY God." - Albert Wesker