Originally Posted by Fat Homeslice
While I've only seen a few suggestions of these, it kind of concerns me that we're using a water type on a sun team to counter rain teams. Honestly, if it's good enough, rain teams are also going to use it anyways just because it's Water typed. The only suggestions I saw for water we're Water/Grass and Water/Fire, both of which could operate on Rain teams just as well as sun teams. I don't have much more to say on Water, pretty sure it's not getting anywhere anyways.
That is obviously the biggest challenge for taking this path, how to ensure it doesn't help rain teams... But there are many ways around this road block. Water being one of the most versatile types, what better way to counter it than with its own adaptability? Water already resists fire, so it gets no defensive boost from rain without a rain-related ability. So, if we were to take some useful thing the water type can do other than rain boosted STAB attacks and abilities that function in the rain, then rely on the cap's primary typing (fire, grass, bug for all I care etc...) for its attacks. Water becomes its defensive/utility type, while generally assuming the role of a different type. It would use moves that don't do what rain teams need, fill a role that rain teams don't want, etc... Eh, it's just a thought. As you said, its been suggested a few times, but it doesn't look like one of the more popular typings for this cap. While I support Water for this cap, I also think it might not be as practical as other types and might just be a more stylistic/mind-screwing choice.