Question

What happens if a Pokemon with Cloud Nine uses Rain Dance/Sunny Day/Sandstorm/Hail?

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Answer 1

It will fail.

Source: Experience

Comments

Thanks Mew and Kronos. +1 to Kronos.

Answer 2

At the end of the turn they're ability will activate and take it away. I did it on Showdown with my brother.

Comments

Weather can't disappear like that...