I’ve noticed that Calreath’s page is incomplete on the wikia, so I played it on Easy Mode and gathered some information, if you can edit the wiki, then please add it!
Politoed: Held Item: Politoedite Psychic Hydro Pump Hypnosis Mud Bomb
Dragonite: Outrage Hurricane Aqua Tail
Heliolisk: Thunder Hyper Beam
Goodra: Rain Dance Muddy Water Dragon Pulse Thunder
Greninja: Water Shuriken Hydro Pump Extrasensory