OK, Midori, you're up! As far as I can see, Frickasee has no real way to hurt us aside from Rock Slide and Toxic, and if the Poison grows too intense we'll awyas have team support waiting in the wings! Start by unleashing your signature Hidden Power (Ice), then once that's died down follow up by exhuming some Toxic powders. Finish up by using the abundant sunlight on the field to Synthesise glucose and heal up any wounds Frickasee may inflict on you. On A3 if he has not used an attacking move, use the time to Grow using the water source and bright light available (don't worry, I'm not assuming SUnny Day or anything).
To sum it up:
Hidden Power Ice-Toxic-Synthesis (Growth if no damage inflicted (except by Toxic) instead)
Ok! Good luck!
Midori's thoughts: Uh, ummmm, how do I fight? Also, what a stupid looking crinoid...*sigh*