Hmm...

Alright. Yersi, Fake Out onto Natle's back, then climb on. Ride 'im like a horsie. =D He shouldn't be able to reach you there, so just cling onto all the fur and Zap Cannon him, followed by a Sing.

If you get flung off, Flash and Thunderwave, depending on remaining actions.

Fake Out ~ Zap Cannon / Flash ~ Sing / Flash / Thunderwave