Something fun to try out. Since the introduction of Kingdra.
https://pokepast.es/e251111a293410cb
Azumarill and Kingdra in rain are just some big threats who can hit almost through anything. Marowak on a rain team might seem I little far fetched, but since it completely shuts down Magearna, Magnezone, (Non bulk up) Zeroara, Scizor, Corviknight and Rotom-Heat.