LaFondaOnFire, that challenge looks like fun.
When I finish my emerald scramble, I'll totally try one.
You want a spinner, you got one.
Take an Excadrill and name it ClearSkies.
EVs/nature/item is completely up to you.
Moveset is Rapid Spin/Return/Earthquake/Rock Slide
This Excadrill doesn't like sandstorms, so it can only use normal-type moves when one is raging.
Remember to adjust happiness so Return actually does something!