Keith's first instinct is to try and burn the powder as it rains from the sky but he realizes a little late that's exactly what the horde hoped for. whatever it is, he feels the way it makes his body seize up and hurt for trying to fight back with fire. With a strangled cry he goes down for a moment.

He tell's his frantic Poliwhirl that they could use a rain dance.

He's screwed out of his own abilities for now anyway and with luck all the rain would hinder all those bugs with wings. (Not to mention giving Rushing Wind's hurricane a little better accuracy.)